Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee511c097908e423…

MALICIOUS

PDF

46.2 KB Created: 2020-08-22 19:40:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d48251bc9d21f028983bed91331841d6 SHA-1: ddc49730456e9a61d1d37fae257ae141c4938e1c SHA-256: ee511c097908e4233c605af5b40c44612e0428a2bf2f8d6e5839fe03b3dcd984
152 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical redirector link to 'ttraff.cc'. This indicates a phishing or scam attempt to lure users to malicious sites. The document body, though heavily obfuscated, contains the same redirector URL and several other PDF links, reinforcing the attack pattern. No scripts were extracted, but the PDF structure and embedded links are sufficient to identify the malicious intent.

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=blank+movie+poster+template
    • http://files.jrouamnationalcouncil.org/uploads/1/3/1/6/131606393/nujariralewanolu.pdf
    • http://files.amkmusic.com/uploads/1/3/1/1/131164046/jefejutavirit.pdf
    • https://cdn.shopify.com/s/files/1/0432/9131/2288/files/baxom.pdf
    • https://cdn.shopify.com/s/files/1/0432/8180/9558/files/84249930325.pdf
    • https://cdn.shopify.com/s/files/1/0459/2658/0375/files/7030113765.pdf
    • https://cdn.shopify.com/s/files/1/0428/9911/2095/files/structural_functionalist_theory.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66689816557.pdf
    • https://cdn.shopify.com/s/files/1/0430/9526/1348/files/centrales_solares.pdf
    • https://cdn.shopify.com/s/files/1/0439/3094/3643/files/jupajiwoxajibemibimifu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/19490865332.pdf
    • https://cdn.shopify.com/s/files/1/0432/7201/1941/files/brownian_motion_finance.pdf
    • https://cdn.shopify.com/s/files/1/0430/9932/4580/files/41913819449.pdf
    • https://cdn.shopify.com/s/files/1/0435/3789/1477/files/medical_laboratory_tests_manual.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_off00006a8f.bin
e4304e1ac568b12b449a20454b153d03c2456de79c06901ba7d2fec67c537019
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A8F 4928 bytes
font_01_sfnt_off00007b31.bin
4f2b9aeaa55aa84f4e378b2c9f828a614acc7146fd5d9d63a8ef0fe68fe0f0ad
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B31 10224 bytes
font_02_sfnt_off00009e26.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x9E26 4324 bytes