Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d079855ff0060b0…

MALICIOUS

PDF

68.2 KB Created: 2021-03-03 05:44:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: fe3e05dec5f6da2668da4cc6e3471597 SHA-1: bc1770b68c7f2b863071c29910736e81688a1d4b SHA-256: 7d079855ff0060b0a7d971b447b6b284424a58b562b6e859962b8b56d6beb9ac
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to potentially harmful content. The document body, though partially corrupted, suggests a lure related to a "Magic chef mini fridge owners manual" to encourage link clicks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://xajibur.ru/123?utm_term=magic+chef+mini+fridge+owners+manual PDF link annotation
    • https://cdn.sqhk.co/golemejexeno/hhajjLF/89377097806.pdfIn PDF document text
    • https://cdn.sqhk.co/kataregulu/eVPw8ec/xatoraxabizavub.pdfIn PDF document text
    • http://pihodze.com/mogujitifetepako213c1.pdfIn PDF document text
    • https://jezasozogederek.weebly.com/uploads/1/3/5/9/135960593/4b3de69c914.pdfIn PDF document text
    • https://vorebalulu.weebly.com/uploads/1/3/5/9/135962534/6333208.pdfIn PDF document text
    • https://zolotamazuragif.weebly.com/uploads/1/3/2/7/132712333/9699977.pdfIn PDF document text
    • http://nekevofitoruzat.22web.org/infographic_design_template_free.pdfIn PDF document text
    • https://xifuforemavu.weebly.com/uploads/1/3/1/1/131164534/456768c91.pdfIn PDF document text
    • https://lefusovu.weebly.com/uploads/1/3/4/0/134040443/soxabojibu_xepasuzaka.pdfIn PDF document text
    • https://fubupudixad.weebly.com/uploads/1/3/4/7/134742266/3703455.pdfIn PDF document text
    • https://cdn.sqhk.co/kibutonap/ihihYid/alien_shooter_td_mod_apk.pdfIn PDF document text
    • https://dufofumiwiz.weebly.com/uploads/1/3/5/3/135309849/naroko-pururewav-desimi.pdfIn PDF document text
    • https://jotesufuxave.weebly.com/uploads/1/3/1/4/131483421/ed33441521.pdfIn PDF document text
    • https://cdn.sqhk.co/sudizatase/ge4zHhg/xokuwobubejasoraba.pdfIn PDF document text
    • https://fixalurona.weebly.com/uploads/1/3/4/3/134314544/7238bea7c59d57.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xepadegi.epizy.com/chronic_kidney_disease_guidelines_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/gewisetug/94593608105.pdfIn PDF document text
    • http://vobuketulina.rf.gd/what_is_the_pin_for_my_apple_wireless_keyboard.pdfIn PDF document text
    • http://xenuduximowub.epizy.com/internet_manager_6._32_kuyhaa.pdfIn PDF document text
    • https://s3.amazonaws.com/nowonovege/75971828661.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/xemamigo.pdfIn PDF document text
    • http://ritofeli.epizy.com/8542771718.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_off0000cc8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC8D 5532 bytes
SHA-256: 62b6097bf77f6f2f577be2723f92ffe6decf3e19e9fcc1b20fa1e8ae2eb5aeb9
font_01_sfnt_off0000df54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF54 10596 bytes
SHA-256: 73122e9ffd5edf75ee145abd4b0089ecb8fe1da785165d6038a7892e6b33c566