Malicious PDF — malware analysis report

Static analysis result for SHA-256 846a64c6369a0d47…

MALICIOUS

PDF

39.6 KB Created: 2020-08-24 15:30:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 182097bea09765e80f823e0d597a8516 SHA-1: b14b72fe04b869233d2f6cd249e66f255301205b SHA-256: 846a64c6369a0d4762ddc9f3dbbbdf5005dee33444be740ea18cc56dec18f1bb
140 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=ihss+sacramento+county+online+timesheet'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many hosted on cdn.shopify.com. The document body also contains the malicious URL, reinforcing the lure. The combination of these factors strongly suggests a phishing or malware distribution attempt.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=ihss+sacramento+county+online+timesheet
    • http://files.postmarkmusicstore.com/uploads/1/3/0/8/130873872/galaxavojuwil-kiwisezuwo-gerukazuma.pdf
    • http://files.fichautauqua.com/uploads/1/3/0/7/130775776/484f03f23a.pdf
    • http://files.opticalequipmentcenter.com/uploads/1/3/0/7/130775557/finuminexabuj_lasuponux_kolajefutekijam_diwutepugepub.pdf
    • http://files.ofra-yitzhaki.com/uploads/1/3/0/9/130969754/sogebamopepek.pdf
    • http://files.sandraharveyphotography.com/uploads/1/3/1/3/131398406/1042773.pdf
    • https://cdn.shopify.com/s/files/1/0429/1251/4201/files/zamofumi.pdf
    • https://cdn.shopify.com/s/files/1/0438/2484/0861/files/xodawugig.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27947700243.pdf
    • https://cdn.shopify.com/s/files/1/0431/0269/9681/files/dolamurarivewuxawujuvepu.pdf
    • https://cdn.shopify.com/s/files/1/0433/3689/2584/files/bixegibiwevorot.pdf
    • https://cdn.shopify.com/s/files/1/0430/7763/2154/files/fireguwilalelekofixeti.pdf
    • https://cdn.shopify.com/s/files/1/0436/8223/4521/files/how_to_export_bookmarks_in_chrome.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sebifoxof.pdf
    • https://cdn.shopify.com/s/files/1/0432/2259/7796/files/18309824117.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_off00005dc0.bin
8a15496d9e9c2d878f718cb597673a518018ac2e581a5cac544512b198ddd3a6
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DC0 5080 bytes
font_01_sfnt_off00006ed6.bin
ab0b62830c2f5fd31473ac4a1a429e42d74c63e4a00d5ad9cab10f1d894973ae
pdf-font-stream PDF embedded font (sfnt) at offset 0x6ED6 10204 bytes