Malicious PDF — malware analysis report

Static analysis result for SHA-256 03f0dc5afee91705…

MALICIOUS

PDF

37.2 KB Created: 2020-07-11 07:22:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 2c0f6cbe3be871f1b2282af89206e27e SHA-1: 1d1f02ef467f28903dbf953360f45bdda9f274fd SHA-256: 03f0dc5afee917057e72e9a559b9ddd030459bfa2ab639d9ed9966a3f942599c
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to disposable hosting and appear to be part of an SEO link farm. One critical heuristic identified a link to known malicious redirector infrastructure, suggesting the intent is to drive traffic to potentially harmful sites. No scripts were extracted, but the sheer volume of outbound links indicates a malicious intent to manipulate search results or distribute further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.com/pify?keyword=makalah+ateisme+pdf In PDF document text
    • http://files.priorityenvironmental.ca/uploads/1/3/2/7/132740415/poturowinu-pepurefeme-zomoxiru.pdfIn PDF document text
    • http://files.divajaya.com/uploads/1/3/2/6/132681757/10bbeae.pdfIn PDF document text
    • http://files.jaxntheboxtattoos.com/uploads/1/3/2/7/132710762/denifuvowujedun-mosofexolalojut-jedamulimuwu-wadorixade.pdfIn PDF document text
    • http://files.chocolate5krun.com/uploads/1/3/2/3/132303374/8967722.pdfIn PDF document text
    • http://files.bingocompany.net/uploads/1/3/1/3/131379612/d2857f2095895b.pdfIn PDF document text
    • http://files.legacyhorselogging.com/uploads/1/3/1/6/131636990/rakofidi-tuxujojaxeki.pdfIn PDF document text
    • http://files.tracygardnerbeno.com/uploads/1/3/2/3/132302810/0fd09a.pdfIn PDF document text
    • http://files.demandinggenealogist.com/uploads/1/3/2/6/132681855/3df4087.pdfIn PDF document text
    • http://files.mtzionucc.org/uploads/1/3/0/7/130740533/tapopolazasagor-zexakuraj-levezukuweli-kafivenup.pdfIn PDF document text
    • http://files.wlcbands.com/uploads/1/3/1/6/131607712/2769e0d94.pdfIn PDF document text
    • http://files.mikemcmahanlpc.com/uploads/1/3/0/9/130969926/ad755595ea.pdfIn PDF document text
    • http://files.chaosincoos.com/uploads/1/3/2/6/132695994/zikovozuxafuje_xugajumek.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://zawaxus.files.wordpress.com/2020/07/davomanikifiveximerabix.pdfIn PDF document text
    • https://fogamadamin.files.wordpress.com/2020/06/7093694718.pdfIn PDF document text
    • https://nelagudisuz.files.wordpress.com/2020/07/bomuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/midotikonujeriruzopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18396470220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ropuxikasafomudixaxo.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000545f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x545F 4824 bytes
SHA-256: 89473836c7ec2501142fe3d1dc1a2c4a0295aa6ce39b7fd93bb4c6540ab2d1e1
font_01_sfnt_off000064c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64C9 10684 bytes
SHA-256: 4f1bf0a4bf541cfc3ec3d8ba97f01c6db812d1227a6b0507bfbf776a39b13399

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