Malicious PDF — malware analysis report

Static analysis result for SHA-256 df4f336572c88775…

MALICIOUS

PDF

103.2 KB Created: 2020-08-08 11:19:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f5630ee3fc1413bbb56929e3397af0d SHA-1: 57afe948e8ec6c31866430f19f2a5ad70fd577c4 SHA-256: df4f336572c8877545d37cf718fd01d003c67ed6ad0555b7abdd2c0976cdff87
148 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious intent, including a critical finding for a malicious redirector link and a link farm. The document body, though heavily obfuscated, contains a URL that matches the redirector link. The presence of a callback lure suggests a potential phishing or tech-support scam pretext. No scripts were extracted from this sample.

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.
  • 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
  • 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=ascites+in+broilers+pdf
    • http://datif.stephanrichter.com.au/uploads/1/3/0/9/130969204/1fd15309.pdf
    • http://files.devinbeliveau.com/uploads/1/3/2/6/132682210/2319511.pdf
    • http://files.nejnamc.org/uploads/1/3/1/6/131607346/bujowadatasivo.pdf
    • https://cdn.shopify.com/s/files/1/0430/1222/7225/files/wimixutorus.pdf
    • https://cdn.shopify.com/s/files/1/0430/7940/1634/files/office_365_product_key.pdf
    • https://cdn.shopify.com/s/files/1/0448/9605/9547/files/nikola_tesla_biography.pdf
    • https://cdn.shopify.com/s/files/1/0437/3243/5093/files/sears_water_softeners.pdf
    • https://cdn.shopify.com/s/files/1/0434/1848/4888/files/11932770885.pdf
    • https://cdn.shopify.com/s/files/1/0427/7737/8972/files/51506051219.pdf
    • https://cdn.shopify.com/s/files/1/0430/0098/7811/files/erectile_dysfunction_protocol_food_list.pdf
    • https://cdn.shopify.com/s/files/1/0437/5350/4917/files/47504757805.pdf
    • https://cdn.shopify.com/s/files/1/0434/0980/1365/files/essential_mathematics_for_economic_analysis_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/0459/0242/files/kadefuweravit.pdf
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/statistical_data_mining_using_sas_applications_second_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/7959/8229/files/ambitious_science_teaching.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_off000158b4.bin
33a634f0ddbfb3e70eedf81b07495b7969c406a0568b2fbc3f50685d0061903c
pdf-font-stream PDF embedded font (sfnt) at offset 0x158B4 5068 bytes
font_01_sfnt_off000169fe.bin
d240493641d7c8416c9869d4260786e39096df15e8e21493240060e223cfd7ac
pdf-font-stream PDF embedded font (sfnt) at offset 0x169FE 10996 bytes