Malicious PDF — malware analysis report

Static analysis result for SHA-256 70e44c75d560c548…

MALICIOUS

PDF

77.3 KB Created: 2021-02-28 08:36:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 0d598b33c3532a2c795be3a75d9ef1b3 SHA-1: 92de0465129363ae4ba7e01692ea125d230e7d30 SHA-256: 70e44c75d560c548a7b10a4d221339b950c2797b07dc0e9b5e207cbef35730cb
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 0.9998

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://maypoin.ru/aws?utm_term=smokey+mountain+series+smoker+accessories PDF link annotation
    • https://cdn.sqhk.co/tefaxobaf/a3ggmib/fedevimamasiparazipojet.pdfIn PDF document text
    • http://leopards.space/zowusikrqn6.pdfIn PDF document text
    • http://pornbustyvids.com/shatter_glass_weedronq5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367941/normal_603b0c952aa51.pdfIn PDF document text
    • https://cdn.sqhk.co/tezofugowura/xgfRXCq/spintrials_offroad_car_driving_games_mod_apk.pdfIn PDF document text
    • http://ledimpress.biz/8926529214qv7wq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382638/normal_603b044fe26a1.pdfIn PDF document text
    • http://brumbum3.xyz/telugu_dubbed_movies_free_download_2020o69q3.pdfIn PDF document text
    • https://wufodiwefoveve.weebly.com/uploads/1/3/4/8/134891768/giwutulus-saxelo-supijixare-sasoz.pdfIn PDF document text
    • https://cdn.sqhk.co/bolukawet/hjMhbge/wububaluwerefuzawat.pdfIn PDF document text
    • http://copyrightshelpscenters.com/208031414679lxeb.pdfIn PDF document text
    • https://lopifonexebifi.weebly.com/uploads/1/3/5/9/135986218/velotonebi.pdfIn PDF document text
    • http://summ-ita.space/gerixoxigulatererkbrdh.pdfIn PDF document text
    • http://xidufefonudug.sportsontheweb.net/51059664287.pdfIn PDF document text
    • http://xbet1.fun/26229797810r9maa.pdfIn PDF document text
    • http://xijulefabogi.getenjoyment.net/ethics_for_the_new_millennium.pdfIn PDF document text
    • https://cdn.sqhk.co/navotezive/yjiGxif/break_your_walls_lyrics.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000f19e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF19E 5180 bytes
SHA-256: e7b9920fc8e8b8c680b784dd5d2e9b9d184948578e17fd39506fcd8f79f4c414
font_01_sfnt_off0001032f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1032F 10648 bytes
SHA-256: cd59e59f403318e009006fdc530a0c9dbbdfb873ce31293cf1813538d7ce486a

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