Malicious PDF — malware analysis report

Static analysis result for SHA-256 46c37d1aecf93701…

MALICIOUS

PDF

70.7 KB Created: 2021-04-04 12:30:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7c71419b68b9e219eb30e73c44146182 SHA-1: 1a79587097896296950a9baf9af3ff5224f85b24 SHA-256: 46c37d1aecf93701663bfa84801c1eaf2cf0912e5b6f54ab6ac5be3ff7affeef
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xezojetit.ru/strik?utm_term=taco+bell+bean+burrito+macros PDF link annotation
    • https://belesekazisose.weebly.com/uploads/1/3/5/3/135397511/4505636.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452612/normal_602ed23e24e78.pdfIn PDF document text
    • https://rimenedefogifu.weebly.com/uploads/1/3/4/4/134466040/2761d91.pdfIn PDF document text
    • http://zowomojagobipur.iblogger.org/zemiwugo.pdfIn PDF document text
    • http://zewudinino.22web.org/41611202800.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464720/normal_6057ffa8b2ad9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495050/normal_600073cce3628.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489992/normal_60055823e53e6.pdfIn PDF document text
    • https://pobanuritixejun.weebly.com/uploads/1/3/4/6/134601578/gekoluzo.pdfIn PDF document text
    • http://sevotapapi.22web.org/3345937311.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417212/normal_5fcb932652f48.pdfIn PDF document text
    • https://sikufotoxatufik.weebly.com/uploads/1/3/4/4/134458503/e43c2e76b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485939/normal_5fec27938d49d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b6f75b2-5f34-4e38-9ffe-eb7b0f5aa028/16292887657.pdfIn PDF document text
    • http://sonifikidukaxiz.epizy.com/mechanical_engineering_schools_in_southern_california.pdfIn PDF document text
    • http://zedagemutumus.rf.gd/favajegoxasikojodi.pdfIn PDF document text
    • http://napusikut.epizy.com/laxazokorujosezum.pdfIn PDF document text
    • http://gisesufuxezemud.epizy.com/discomfort_is_the_price_of_admission_to_a_meaningful_life_susan_david.pdfIn PDF document text
    • http://vivijar.epizy.com/vabevafozazexomixowunevul.pdfIn PDF document text
    • http://luzasuzudi.rf.gd/all_in_one_er_apk_old_version.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6d9d18c-e1cb-45b4-94a0-bc5d8d60cdfe/the_chronicles_of_narnia_prince_caspian_free_download_full_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3a77ae1-5782-4ce6-b033-d5429e348992/03_jeep_liberty_fuse_panel_diagram.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d85e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD85E 5032 bytes
SHA-256: edfc93c3869acf71f63ab89cec4fd08856eca105e4dae833dbd8ca96bd778193
font_01_sfnt_off0000e961.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE961 10548 bytes
SHA-256: e378796a8b1ff972e3361bf51fee768a47210abf0a4b1238a8958134105e66d0

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