Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d85fc19512e1c84…

MALICIOUS

PDF

67.0 KB Created: 2021-04-14 11:08:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: bc9e3bffdca1f7dd3d69a083d3251778 SHA-1: e7f4a2d31b54d451a113806285472667c96a53f5 SHA-256: 7d85fc19512e1c84a8632bf5e4eca69d32c4e2e20040152af1347740816cf02e
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

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 0.8274

Heuristics 4

  • 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
  • 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://jottigo.ru/strik?utm_term=os+the+shack+based+on+a+true+story PDF link annotation
    • http://tidemelewofu.iblogger.org/platform_tools_for_poco_f1.pdfIn PDF document text
    • http://love-your-lips.online/cara_edit_file_lewat_androidf3k2s.pdfIn PDF document text
    • http://pristav.pro/93928178892g1eml.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378608/normal_601b604bd160f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464865/normal_5fd66fbec8a33.pdfIn PDF document text
    • http://sabojuxet.22web.org/what_is_the_point_of_being_alive_if_you_dont_at_least_try.pdfIn PDF document text
    • http://net-klientov.ru/numilovosoux354.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/susonanezaj/detox_diet_plan_foods_to_avoid.pdfIn PDF document text
    • http://sawopirorafo.rf.gd/14173132250.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/altiplanicie_mexicana.pdfIn PDF document text
    • http://peneperu.epizy.com/algebra_rules.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/vce_player_apk.pdfIn PDF document text
    • https://18e7ef82-5c75-44fe-ae22-4c356c2c9ce0.filesusr.com/ugd/749e61_dc23d98bbed34c42a87417e7febc0aeb.pdf?index=trueIn PDF document text
    • https://6fc76513-a17a-4053-940d-bef108f5ea85.filesusr.com/ugd/3a5ef0_4aae9d8930ad4a2f9cfaa984556a0711.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/what_are_the_types_of_parameters_in_python.pdfIn PDF document text
    • https://f61a8d15-835b-4c36-a3db-e4ead73ab13f.filesusr.com/ugd/e9f5f3_399726ab432149a0bd3ac012269996e1.pdf?index=trueIn PDF document text
    • https://e0ff2378-281a-4ea3-95ae-419c526fdc99.filesusr.com/ugd/0baf77_dc8f913bc3a7446fa39e4ec6d9cf8be5.pdf?index=trueIn PDF document text
    • https://f730d15c-1921-46d2-b6d4-288333e40990.filesusr.com/ugd/e2c223_f4ec82c7259e4c1083fe911b50fc1960.pdf?index=trueIn PDF document text
    • https://39c3e2ba-dcb8-4bc0-9ed7-0058f02c59d5.filesusr.com/ugd/fd4c29_d02dd3ade2fd46089f31f02f2f4a3ad8.pdf?index=trueIn PDF document text
    • http://fabonek.rf.gd/mobigagoluxibiximup.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/wheat_free_diet_sheet.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f15c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF15C 5160 bytes
SHA-256: 62efa32b3aced17713695c7e502e6b0064b345989b99d39165f1f5b4098ebf04

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