Malicious PDF — malware analysis report

Static analysis result for SHA-256 34079e7b8a65eba6…

MALICIOUS

PDF

36.7 KB Created: 2020-08-09 20:53:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6065e8a9c55b106908560c00ed9d1b2c SHA-1: e698cdc862208c913ec82f26f1e0c03d4a9ed9ab SHA-256: 34079e7b8a65eba611f6edbe8055035c849df51af6aed137a8e4443fe0890b95
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing for linking to known malicious redirector infrastructure, specifically 'ttraff.cc'. The document body, though partially corrupted, contains the URL 'https://ttraff.cc/pify?keyword=blister+in+the+sun+tab+pdf' and numerous other embedded links, many pointing to Shopify domains, but some to unknown domains. This suggests a phishing or scam attempt designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=blister+in+the+sun+tab+pdf
    • http://jozedo.walberswickferry.com/uploads/1/3/2/7/132741555/magebuzim-robevoz-bubowog.pdf
    • http://files.campdogginit.com/uploads/1/3/0/9/130969053/57776fc6be.pdf
    • http://files.neisca-iowaclassic.com/uploads/1/3/0/8/130813851/fugujilutokamipit.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/lagupu.pdf
    • https://cdn.shopify.com/s/files/1/0434/2225/3208/files/ccna_lab_practice.pdf
    • https://cdn.shopify.com/s/files/1/0432/2865/9874/files/special_status_of_jammu_and_kashmir_article_370.pdf
    • https://cdn.shopify.com/s/files/1/0432/8708/5222/files/adobe_indesign_cs4_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0428/0877/0726/files/bewetaxuwilo.pdf
    • https://cdn.shopify.com/s/files/1/0429/7015/3113/files/wuderukobexu.pdf
    • https://cdn.shopify.com/s/files/1/0433/3309/1480/files/45238625765.pdf
    • https://cdn.shopify.com/s/files/1/0433/7909/7758/files/51939866593.pdf
    • https://cdn.shopify.com/s/files/1/0437/4816/3733/files/mefazim.pdf
    • https://cdn.shopify.com/s/files/1/0431/7020/1760/files/ruzilexavevif.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000528b.bin
8d753c1b4fa2277d4d1894627abad4afc1102d552e9434110d1d400a2f5cefd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x528B 5316 bytes
font_01_sfnt_off0000648f.bin
4c7ce970f41c53ec2520cf1e0fd980180c956c1fc5f9e446b3d3c9abe7898644
pdf-font-stream PDF embedded font (sfnt) at offset 0x648F 9836 bytes