Malicious PDF — malware analysis report

Static analysis result for SHA-256 319672a01cad2ebd…

MALICIOUS

PDF

39.4 KB Created: 2020-08-22 13:07:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f8aa62e436069692604c1846ef0c1a3c SHA-1: 361bd2e0ccc507866910609d7f249961ffbbf941 SHA-256: 319672a01cad2ebde429f7d204775eea53ccac51e1f5955217c07ff367eb4e35
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.cc'. This redirector is likely used to obscure the final malicious destination. The presence of a link farm and a malicious redirector indicates a phishing or scam attempt designed to lead users to harmful 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=burger+priest+secret+menu+answer
    • http://files.newlenoxordnance.com/uploads/1/3/0/7/130775639/6931008.pdf
    • http://files.salemtownneighbors.org/uploads/1/3/1/1/131164273/5513270.pdf
    • https://cdn.shopify.com/s/files/1/0434/6360/6429/files/dollar_tree_hiring_age.pdf
    • https://cdn.shopify.com/s/files/1/0450/4210/6518/files/actualit_socio_conomique_en_afrique_francophone.pdf
    • https://cdn.shopify.com/s/files/1/0428/8439/9270/files/dajefuwubu.pdf
    • https://cdn.shopify.com/s/files/1/0433/5940/4197/files/vidmate_app_installing.pdf
    • https://cdn.shopify.com/s/files/1/0431/9900/4827/files/19648336221.pdf
    • https://cdn.shopify.com/s/files/1/0435/9041/8589/files/lumiere_blanche_cecilia_wang.pdf
    • https://cdn.shopify.com/s/files/1/0430/4276/7001/files/descargar_biblia_thompson_reina_valera_1960.pdf
    • https://cdn.shopify.com/s/files/1/0431/8278/4676/files/43979019231.pdf
    • https://cdn.shopify.com/s/files/1/0428/0533/0083/files/sobilofoxazafisamusire.pdf
    • https://cdn.shopify.com/s/files/1/0437/7768/7706/files/ejercicios_something_anything_nothing.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_off00005a88.bin
7bbd0923e78dc0c1e3473be154dfce2d5fcfd4e514dd9d5c5adaf7caa443b219
pdf-font-stream PDF embedded font (sfnt) at offset 0x5A88 5364 bytes
font_01_sfnt_off00006cc7.bin
87df37a842b31a8131699b60bad1c5a6b36310d7a866df99f321b65ceb2ef3d4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC7 10616 bytes