Malicious PDF — malware analysis report

Static analysis result for SHA-256 d027807847705b21…

MALICIOUS

PDF

82.3 KB Created: 2021-09-13 05:45:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 21ed8efaad69026b778a6ad05b2e6905 SHA-1: 6ff586ca6ff9abbd82ef1a39c99c880d95a5b966 SHA-256: d027807847705b21539dc9c1cbb37298e8cb7aae31cf02aa1f39796476ec9e15
156 Risk Score

Malware Insights

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

The PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs that point to various websites, many of which appear to be compromised or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using non-clustered link farms on disposable hosting, suggesting an attempt to distribute malicious content or phish users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://synerhu.ru/uplcv?utm_term=a+quiet+place+2+full+plot PDF link annotation
    • http://ottomaniantextile.com/userfiles/file/piwit.pdfIn PDF document text
    • https://ckfinder.pamlskovnik.cz/ckfinder/userfiles/files/43094182370.pdfIn PDF document text
    • https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/9738b8f995dad0fb1f037bfcf6516212/leziduxigifago.pdfIn PDF document text
    • http://vaynhe.com/upload/files/puvotugiwixalu.pdfIn PDF document text
    • http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613997deae680---51294877114.pdfIn PDF document text
    • https://hinaweb.com/upload/file/gisufaziwefobuwejixifug.pdfIn PDF document text
    • https://curvy.tw/upload/files/21716707427.pdfIn PDF document text
    • https://dreamscapes.ca/dream_scapes/userfiles/files/rivumaliwivedodaxar.pdfIn PDF document text
    • http://glamour-nsk.ru/ckfinder/userfiles/files/pibebevasozufepul.pdfIn PDF document text
    • http://tnshoppingbag.com/upfiles/file/12292763778.pdfIn PDF document text
    • https://binhruamuinanobac.com/wp-content/plugins/super-forms/uploads/php/files/3ro1gdtssk5gjpp1vpso289u1g/simevatixisugagojidivog.pdfIn PDF document text
    • http://com123.vn/uploads/file/41999223645.pdfIn PDF document text
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e8494c8cf1---70445485884.pdfIn PDF document text
    • https://tennis94.fr/img/pics/files/16325249327.pdfIn PDF document text
    • https://yuanfuconstruction.com/ckfinder/upload/files/78058599014.pdfIn PDF document text
    • https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130882d1ac21---wunagizakuk.pdfIn PDF document text
    • http://fecoil.com/userfiles/file/2463792411.pdfIn PDF document text
    • http://webinaris.blog/ckfinder/userfiles/publics/files/ridowokevoxejew.pdfIn PDF document text
    • https://shotclock.ca/wp-content/plugins/super-forms/uploads/php/files/9abd2e6a5e5a50cf4a90093ed5890bdd/3354050474.pdfIn PDF document text
    • https://mongolia-volkslift.com/uploads/files/wojevonol.pdfIn PDF document text
    • http://skup-laptopow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135f588d7746---30895764067.pdfIn PDF document text
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/up5i8ov0c9ncqcn26fri5a6mqu/bowes.pdfIn PDF document text
    • 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF47 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f759.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF759 17392 bytes
SHA-256: 93ce03d37c9352c4b238ad367c380f3ae34222b5e18ecb5b9881a528b451819c
font_02_sfnt_off0001240b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1240B 10448 bytes
SHA-256: dc1c475f1ef42cee57b2762fcecef580649961c40e5e517581321572a52668ce

Open this report in the interactive analyzer, or submit your own file for analysis.