Malicious PDF — malware analysis report

Static analysis result for SHA-256 0989d916b671f721…

MALICIOUS

PDF

44.4 KB Created: 2020-08-16 20:39:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41b861370b02cd3280e4c6b303cfa8a9 SHA-1: e94a52538b9c8a1e66f98d85de6d88c860392a01 SHA-256: 0989d916b671f7214bdcb86cf11a6b6a154f9b01e8c4714c92af27a05839a4fe
162 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by an ML classifier and contains numerous embedded links. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=audit+committee+meeting+minutes+template'. The document body, though heavily obfuscated, also contains this URL, suggesting a link farm or redirection tactic to distribute further malicious content. The presence of many Shopify-hosted PDF links, some marked as benign and others unknown, indicates a potential SEO poisoning or link farm strategy.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/pify?keyword=audit+committee+meeting+minutes+template In PDF document text
    • http://files.kilmoreshow.org/uploads/1/3/2/7/132740435/29e9a51d3c.pdfIn PDF document text
    • http://files.stanleyjusticeproductions.com/uploads/1/3/1/3/131397971/58071.pdfIn PDF document text
    • http://files.troutbum.ca/uploads/1/3/2/7/132710655/046c6686a.pdfIn PDF document text
    • http://zidagoxa.northbristolsuscom.org/uploads/1/3/2/6/132683328/0e0f844f3.pdfIn PDF document text
    • http://wugipafo.protelosgroup.com/uploads/1/3/1/4/131408024/sizubedakowedig.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8155/6375/files/twilight_saga_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5719/1843/files/dibujos_colorear_dinosaurios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2858/4347/files/complete_bhagavad_gita_sanskrit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43127542751.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7386/2808/files/53426513927.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5536/3734/files/la_poetica_di_aristotele_libro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4301/2256/files/wubisizofuretamidakimozo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8339/7275/files/43925411828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0786/8060/files/75813369007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6772/8279/files/2383872361.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1321/8210/files/xutugavokezoworaselepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3010/7544/files/11453113449.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_off00007069.bin
7d42b473190aafe9d24c85cbad3d837869ebb7feece62cb5da8b1815986c942a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7069 5288 bytes
font_01_sfnt_off0000824b.bin
7601d3821a6bd8ae8527822d0f76a444757c00ff0fcd1bb5ea59496abb49b197		 pdf-font-stream PDF embedded font (sfnt) at offset 0x824B 9900 bytes

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