Malicious PDF — malware analysis report

Static analysis result for SHA-256 22bbd6872ab93ac5…

MALICIOUS

PDF

53.3 KB Created: 2020-08-18 17:05:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f13c72d09f74c967c73e967fda76f66 SHA-1: ee6ec461ee99bb9b789a24a426fff269def81b13 SHA-256: 22bbd6872ab93ac56fc4e1537bd7f72adab15f790c7b63883e263f92cc3465a2
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple embedded URLs, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text that, combined with heuristic findings, suggests an advance-fee scam lure. The primary malicious URL is ttraff.ru, which redirects to a page related to a 'gentleman's guide'. The presence of numerous Shopify links, while benign, is likely part of a link farm to improve SEO for the malicious content.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.ru/pify?keyword=gentleman%2527+s+guide+original+cast
    • http://sejonuva.jessdoinglife.com/uploads/1/3/2/6/132682663/zuvukukivutut.pdf
    • https://cdn.shopify.com/s/files/1/0433/0458/3318/files/how_to_improve_creative_writing_skills_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0432/7541/9798/files/27267643283.pdf
    • https://cdn.shopify.com/s/files/1/0437/0428/7383/files/star_ocean_anamnesis_awakening_guide.pdf
    • https://cdn.shopify.com/s/files/1/0438/6154/1014/files/manualidades_con_material_reciclable_paso_a_paso.pdf
    • https://cdn.shopify.com/s/files/1/0431/9094/3902/files/16843578184.pdf
    • https://cdn.shopify.com/s/files/1/0429/2712/8735/files/animation_maker_android_app.pdf
    • https://cdn.shopify.com/s/files/1/0430/6577/0135/files/trail_guide_to_the_body_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/8945/9368/files/guided_reading_lesson_plan_template_kindergarten.pdf
    • https://cdn.shopify.com/s/files/1/0431/5011/4965/files/syntactic_structures_by_noam_chomsky.pdf
    • https://cdn.shopify.com/s/files/1/0440/8901/6472/files/graham_fuller_arap_bahar_ve_trkiye.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_off0000933c.bin
f3b558416090c3b0e0c94a00111dbb9a8518c5aab9c7a6295b953006aa86b833
pdf-font-stream PDF embedded font (sfnt) at offset 0x933C 5324 bytes
font_01_sfnt_off0000a544.bin
dabbe03c108d287bedb45394e50cd46f47786dc183e0a172eeab3a6677d410a2
pdf-font-stream PDF embedded font (sfnt) at offset 0xA544 10420 bytes