Malicious PDF — malware analysis report

Static analysis result for SHA-256 72a4b4d59f4b43bd…

MALICIOUS

PDF

96.6 KB Created: 2021-05-13 21:27:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: fe2a6daeee23fc7952f1fc58010ff054 SHA-1: 1b643b2938b69f1abd776e33cf718cd3f9c9cca2 SHA-256: 72a4b4d59f4b43bd5576ab5ae586dfc8305d2f532637fe6bbc38319267e73e3e
186 Risk Score

Malware Insights

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

This PDF document is identified as malicious by ML classifiers and ClamAV, indicating a phishing or scam attempt. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The document body, though partially corrupted, includes a title related to iPhone restrictions, likely a lure to encourage clicks on the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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://pelibifir.ru/strik?utm_term=how+to+reset+restrictions+passcode+on+iphone+6+without+computer PDF link annotation
    • https://cdn.sqhk.co/xivovido/jfiggey/sisowaduseporenifufarar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380230/normal_606b97080b845.pdfIn PDF document text
    • https://fosovumukudire.weebly.com/uploads/1/3/4/2/134235423/58ae5b2c9e0d.pdfIn PDF document text
    • https://mopuxemunokele.weebly.com/uploads/1/3/5/3/135318458/7240182.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408348/normal_5fc5a97ec0277.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367668/normal_60547683c7b6e.pdfIn PDF document text
    • https://cdn.sqhk.co/neviragar/hhhw9ig/waganejizixinusir.pdfIn PDF document text
    • https://wamibujobaju.weebly.com/uploads/1/3/4/7/134716207/7c0f63c.pdfIn PDF document text
    • https://cdn.sqhk.co/kogeledewafo/jcicUgg/rilakkuma_farm_fishing_rod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471082/normal_6032166ed5cf9.pdfIn PDF document text
    • https://lifibopunikesi.weebly.com/uploads/1/3/3/9/133999807/lanelarufilusu_pijamunigoduko_zogupajus_gadibo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401525/normal_6069dca1d0ac8.pdfIn PDF document text
    • https://cdn.sqhk.co/ributexovek/nggjalG/zugojizawikigigunu.pdfIn PDF document text
    • https://gomopurijovovuj.weebly.com/uploads/1/3/5/3/135390772/dulusijenonigaguzu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379731/normal_5fcb1356ba1a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451369/normal_60656d8077427.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443329/normal_5ffc59b11ba7c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391954/normal_5fe6c06c5e1b9.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://uploads.strikinglycdn.com/files/8e061ae9-2d1b-43f5-b174-9bd81dd009b5/bewejegimupi.pdfIn PDF document text
    • https://77701ba7-c5ad-4750-ab17-5b03548f7fc0.filesusr.com/ugd/9a242c_28faa96b23814c40bbcf9bef3c94377f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b27d9660-9445-4f3c-8f70-e6a3e10b8273/taranis_qx7_specs.pdfIn PDF document text
    • https://3c45aaf8-24f3-4cde-9773-cf44a0a970d3.filesusr.com/ugd/ae7d54_82fd1f157a84472da3bd78c151da7c28.pdf?index=trueIn PDF document text
    • https://b5526579-b22d-45a0-8251-9885a72cf3eb.filesusr.com/ugd/0cd019_078ca5775ed74e2ab0b9679e7489e419.pdf?index=trueIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010755.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10755 5368 bytes
SHA-256: 638060d085e5db8a261f440ea79778ee7e7167dc4ae72647011ad1b07f0c7c69
font_01_sfnt_off0001196b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1196B 3132 bytes
SHA-256: dd8f2119ba90aa857aafea6907ad7cd2a15cb790a9cb241870c12c3fc7dda5bb
font_02_sfnt_off0001265e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1265E 12364 bytes
SHA-256: 3be8ea6d548b0c45bae323a28fe18f7360a3ced7db5447f539949124611e43c7
font_03_sfnt_off00014f93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F93 16376 bytes
SHA-256: f267a97a42ed964490c0c36cf8d24d30f5cfc386ee24850e75bb3a4991f11828
font_04_sfnt_off0001653b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1653B 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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