Malicious PDF — malware analysis report

Static analysis result for SHA-256 60b5d9608714362d…

MALICIOUS

PDF

84.3 KB Created: 2021-09-19 20:07:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 6da15baa1ec3ffbb6ddeae03712eb4d3 SHA-1: 63f7ebab1ba293cb8548740809fc36e2d2b72205 SHA-256: 60b5d9608714362da81f78b5c635cc88c45fc6dea64ea04a9ec7999ffaac5cad
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to compromised WordPress sites and disposable hosting, suggesting an attempt to redirect users to malicious content. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://pistant.ru/uplcv?utm_term=happymod+apk+car+parking+multiplayer PDF link annotation
    • https://dennismaloney.ca/upload/editor/file/dolaxukirosozorivimorepol.pdfIn PDF document text
    • http://shyjjc.com/v15/Upload/file/2021912333327303.pdfIn PDF document text
    • https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/16145f990bd899---88891219482.pdfIn PDF document text
    • https://juraganmonyet.com/contents/files/puwolarafowovolopezaxa.pdfIn PDF document text
    • http://clinicaveterinariailmarzocco.it/userfiles/files/42347125757.pdfIn PDF document text
    • http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/6hlduog8rh0bffph9td3ub50c5/61581675375.pdfIn PDF document text
    • http://www.scea.edu.mn/ckfinder/userfiles/files/18371209314.pdfIn PDF document text
    • http://honda-vo.com/upload/file/juwovixim.pdfIn PDF document text
    • http://bangdinhphucat.com/quangbasanpham/app/webroot/upload/image/files/sovurusakegokebe.pdfIn PDF document text
    • http://aeusjtu.pretty-match.com/upload/files/xisaronabuwowutes.pdfIn PDF document text
    • http://kirsanov-maslo.ru/uploads/80945512852.pdfIn PDF document text
    • http://all-paca.com/ckeditor/ckfinder/core/connector/php/uploads/files/kewadudi.pdfIn PDF document text
    • https://beautifulhairstore.com/upload/files/jojisitejinu.pdfIn PDF document text
    • http://anais.terminarz.online/kosmetyczka/krakow/files/12391786838.pdfIn PDF document text
    • https://leciv.fr/uploads/FCK_files/file/8000967832.pdfIn PDF document text
    • http://www.communityheroesproject.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613ea645bf05d---mejoxexok.pdfIn PDF document text
    • https://imapcb.org/wp-content/plugins/super-forms/uploads/php/files/6b615bbc0e32d2c59cf3a8a0809a2d9c/wadewebirexugefewaga.pdfIn PDF document text
    • https://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/2dc31cf2b738abbb7f0d3abfbe1bab66/fatifujixuwi.pdfIn PDF document text
    • http://xn--b1agpbmdtf.xn--p1ai/upload/file/xupojelenifagonafu.pdfIn PDF document text
    • https://oknoplus-omsk.ru/wp-content/plugins/super-forms/uploads/php/files/8c757ed6d3f99ca1dcc1a731a10c39a6/98549740971.pdfIn PDF document text
    • http://paolacaone.eu/userfiles/files/goponi.pdfIn PDF document text
    • http://studiovalecchi.it/userfiles/files/gitisunibazerifowotimew.pdfIn PDF document text
    • http://vit-physio.de/file/73871476026.pdfIn PDF document text
    • http://140.121.161.111/ckfinder/userfiles/files/18915210991.pdfPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD8E 20216 bytes
SHA-256: accf303a94264c7a17aafed9587aa27ca4012e4ad66fa196eaa7b585ef6a686a
font_01_sfnt_off000112ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112AB 10984 bytes
SHA-256: 258ff2d26b77d2e543ff2583c9c779c9618691deedf6191a95bdedf8622667b2
font_02_sfnt_off00012bea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BEA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1