Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a8336c0af098f46…

MALICIOUS

PDF

39.4 KB Created: 2020-08-22 14:45:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 56dbe09f648882b578ae89e42d22b5bd SHA-1: 400dc76b6e21b440eedc6153a0caeeafd2acf672 SHA-256: 3a8336c0af098f46942c7cbbdc125643868b8754ecdd8b1e7203cafc70cb6a8c
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a deceptive link presented as a download for Adobe Reader, which is a common lure for phishing or malware delivery. The link redirects to 'ttraff.com', identified as malicious redirector infrastructure. The document also exhibits characteristics of a link farm, with numerous embedded links, suggesting an attempt to distribute malicious content or engage in SEO manipulation for malicious purposes. No scripts were extracted, but the PDF structure and embedded links strongly indicate a social engineering attack.

Heuristics 4

  • 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
  • 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=adobe+reader+for+windows+10+standalone
    • http://files.bonnieleeanderson.com/uploads/1/3/1/4/131408502/paxitesewafu.pdf
    • http://files.commitmentcounselling.com/uploads/1/3/2/8/132814302/dodujowikop-donufix.pdf
    • http://ziwulotoz.theuneven.com/uploads/1/3/0/8/130814328/pijojaf.pdf
    • http://xewexog.educationalpsychologisttherapy.com/uploads/1/3/0/8/130813364/9f0456e1a46d.pdf
    • https://cdn.shopify.com/s/files/1/0431/6066/6274/files/78685343130.pdf
    • https://cdn.shopify.com/s/files/1/0438/5882/1285/files/translation_oye_como_va.pdf
    • https://cdn.shopify.com/s/files/1/0432/4874/6651/files/lanric_cable_tray_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0437/2814/2485/files/44125974434.pdf
    • https://cdn.shopify.com/s/files/1/0438/2405/4429/files/57258914785.pdf
    • https://cdn.shopify.com/s/files/1/0434/1281/6034/files/rukugemule.pdf
    • https://cdn.shopify.com/s/files/1/0435/8383/2227/files/2013_hyundai_sonata_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/3134057883.pdf
    • https://cdn.shopify.com/s/files/1/0449/0254/7611/files/ejercicios_de_arreglos_en_java.pdf
    • https://cdn.shopify.com/s/files/1/0431/6777/6919/files/53610383060.pdf
    • https://cdn.shopify.com/s/files/1/0440/9245/7112/files/siemens_plc_training.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c52.bin
ece6881d073c7612bd5103e92807f457a791ab27128dfb4cf2497b8d00952f89
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C52 5316 bytes
font_01_sfnt_off00006e87.bin
28071ce545349e740ef399662d826488407353e58b7ebc9a7e2332d10dad7319
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E87 10024 bytes