Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9b9a51d9a0017a8…

MALICIOUS

PDF

45.6 KB Created: 2020-08-21 21:18:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 001f8b24472284e216423dbcb8174f45 SHA-1: 77b11796ed58f1fc93833390fa3572c05bc14832 SHA-256: f9b9a51d9a0017a8d02e0297f2df69d0d89540e8d38f6ab9f7609bbbf85928aa
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains multiple embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK pointing to 'https://ttraff.cc/pify?keyword=mandated+reporter+hotline+cps'. Another critical heuristic, PDF_SEO_LINK_FARM, indicates a mass of external PDF links, with 'https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nakawefefaf.pdf' being the first identified. The document body, though heavily obfuscated, contains similar URL patterns. The presence of urgency lures further supports a phishing or scam 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.
  • 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.cc/pify?keyword=mandated+reporter+hotline+cps
    • http://japazaj.thejuicingstation.com/uploads/1/3/0/7/130776401/211b8.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nakawefefaf.pdf
    • https://cdn.shopify.com/s/files/1/0450/2175/7590/files/philosophical_posthumanism.pdf
    • https://cdn.shopify.com/s/files/1/0435/8579/8301/files/seradinuzelejuvufikez.pdf
    • https://cdn.shopify.com/s/files/1/0432/4029/2520/files/harmonized_tariff_schedule_of_the_united_states.pdf
    • https://cdn.shopify.com/s/files/1/0438/4181/4693/files/sumuvol.pdf
    • https://cdn.shopify.com/s/files/1/0431/5050/8181/files/xatuwidebanopuwoxarof.pdf
    • https://cdn.shopify.com/s/files/1/0432/2285/9943/files/74040155843.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/mojefe.pdf
    • https://cdn.shopify.com/s/files/1/0429/1212/0998/files/8509361824.pdf
    • https://cdn.shopify.com/s/files/1/0441/0854/6200/files/nissan_frontier_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/8063/6821/files/statics_13th_edition_hibbeler.pdf
    • https://cdn.shopify.com/s/files/1/0459/2425/3863/files/el_heroe_baltasar_gracian.pdf
    • https://cdn.shopify.com/s/files/1/0427/8291/6767/files/kevimerobo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006783.bin
0a455122aeafb22653fd7f6622f4a569b1b5ec4ed03affc457929c312cb2cf26
pdf-font-stream PDF embedded font (sfnt) at offset 0x6783 4956 bytes
font_01_sfnt_off0000783e.bin
7a79aa39123cbf6cc07fb773a489014e2daa7dd438b52ae0f9dba42e98a2f24e
pdf-font-stream PDF embedded font (sfnt) at offset 0x783E 10404 bytes
font_02_sfnt_off00009bcf.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x9BCF 4324 bytes