Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc5f59983aefa9d2…

MALICIOUS

PDF

75.2 KB Created: 2021-02-21 10:56:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 3293c3f2430db0e2bda8248436737b90 SHA-1: ae3c90539322580099833416559ea9453c1d233b SHA-256: cc5f59983aefa9d2e59c34f044923ae5fea6d552746e3dc06df5da739b32e36c
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. The document body and embedded URLs suggest a lure related to job searching, directing users to potentially malicious domains. The presence of external URIs and a link farm heuristic further supports the malicious intent of distributing links to external, untrusted resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/123?utm_term=state+employees+credit+union+jobs+near+me PDF link annotation
    • https://cdn.sqhk.co/pozusonitid/Liaiaij/xufexupekefomexepugudubok.pdfIn PDF document text
    • https://rejomopoxe.weebly.com/uploads/1/3/1/3/131383333/mijosukulolefotepom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393763/normal_5fe752946b627.pdfIn PDF document text
    • http://reduslim-siteofficial.site/zowoxumadonudukov10.pdfIn PDF document text
    • http://vorecan.space/75175118690cc2lr.pdfIn PDF document text
    • https://soxixafefude.weebly.com/uploads/1/3/4/4/134434462/zigiwiruwojala-sexenibonina-wemabuwek-xekoderowisa.pdfIn PDF document text
    • http://dvestideyli.xyz/xemafoodal.pdfIn PDF document text
    • https://kosodakugup.weebly.com/uploads/1/3/4/6/134655388/kefawow.pdfIn PDF document text
    • http://azorocheat1.xyz/rusalukewudadikonw2ze.pdfIn PDF document text
    • http://private-channel.site/macmillan_english_worksheets_for_grade_8l16bj.pdfIn PDF document text
    • https://jevijoju.weebly.com/uploads/1/3/5/9/135978445/883346.pdfIn PDF document text
    • http://sdek-24.cc/classic_cars_for_sale_dothan_alabama_craigslistuunvd.pdfIn PDF document text
    • https://cdn.sqhk.co/webepinovet/ijs2hbY/56028822373.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/gazivemon/29761231376.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB2B 5524 bytes
SHA-256: f67b92b66d07c92b146ae45426428496915b6ba56dd1e68d06aef01dbe9d9dbe
font_01_sfnt_off0000edce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDCE 10436 bytes
SHA-256: 71dada67bd351e9dd00ee67ee67ff7c77ded2f74cdca29a0513a519a1ccb7b5f
font_02_sfnt_off00011147.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11147 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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