Malicious PDF — malware analysis report

Static analysis result for SHA-256 916d1f9cf108d078…

MALICIOUS

PDF

70.0 KB Created: 2021-03-19 12:03:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 2c083f92b9053c81276c9df3f08a63ab SHA-1: 8575b6a147776fe3bff674b8eb89d8fcc2dfb080 SHA-256: 916d1f9cf108d0783e0ebad4ae3e4a10c439d8f4bff8d5e727080c2f9e603b31
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 pointing to disposable hosting, suggesting it's part of a link farm or SEO spam operation. The primary URL, 'https://maypoin.ru/wix?keyword=icandy+pear+manual', appears to be a lure for users searching for specific manuals, potentially leading to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://maypoin.ru/wix?keyword=icandy+pear+manual PDF link annotation
    • https://pexasuwen.weebly.com/uploads/1/3/4/5/134593650/vulagugidil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418783/normal_5fd99a7c8d4b3.pdfIn PDF document text
    • https://fadusibolene.weebly.com/uploads/1/3/4/0/134042843/712f654.pdfIn PDF document text
    • https://pazodozonevaken.weebly.com/uploads/1/3/4/6/134606284/6831666.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425759/normal_600b2bf7a18af.pdfIn PDF document text
    • https://nuralizowipu.weebly.com/uploads/1/3/4/6/134693001/gawivukat-femanu-wudupanem-butos.pdfIn PDF document text
    • https://raragunaxunu.weebly.com/uploads/1/3/4/8/134886293/remixisenawibe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449417/normal_5ffd55f35f19f.pdfIn PDF document text
    • https://retetozatinum.weebly.com/uploads/1/3/0/7/130775023/suxewutusurit_rejedadenunoso.pdfIn PDF document text
    • https://tezanifarepuji.weebly.com/uploads/1/3/0/7/130775277/9957955.pdfIn PDF document text
    • https://najigojuvunijo.weebly.com/uploads/1/3/0/8/130874658/7d60a967.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444115/normal_603ea52103a3f.pdfIn PDF document text
    • https://zizusufake.weebly.com/uploads/1/3/4/6/134646877/vezidire-vikemabad-vekitogaxo-paxud.pdfIn PDF document text
    • https://kumajevebak.weebly.com/uploads/1/3/1/8/131856027/a8cda4.pdfIn PDF document text
    • https://lotefexikig.weebly.com/uploads/1/3/4/0/134097130/5c8f3362fd9.pdfIn PDF document text
    • https://tomumexajozovod.weebly.com/uploads/1/3/0/9/130969356/wabivelulokukigu.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/wudibirewuduto/lagu_ayo_and_teo_rolex_remix.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/guia_de_supervivencia_urbana.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc1366bd-d6b7-4b41-abe4-8317d276f732/lord_of_the_rings_4k_digital_intermediate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2692a51d-d811-44c3-87b9-a525422c8408/walmart_black_friday_2020_deals_for_days_sale_11_11.pdfIn PDF document text
    • https://s3.amazonaws.com/bivanud/vorrei_chiedere_informazioni_in_inglese.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffb924d1-62d2-44ea-8a94-30b408593876/ford_f350_service_body.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/absence_request_form_hockerill.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ef2139c-13d7-466c-8822-8b19a6f36782/selidalibajasu.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_off0000c880.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC880 4724 bytes
SHA-256: 75183044dfdb0b0e1328a30f564486769726c48617fe32376360dc29a956b3a4
font_01_sfnt_off0000d863.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD863 10644 bytes
SHA-256: e4e7fdd5e84eeb780f4bde5b538aaec11b7fa9bb3fd648e6b5752421bfa85ee1
font_02_sfnt_off0000fccf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCCF 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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