Malicious PDF — malware analysis report

Static analysis result for SHA-256 00b884043595303b…

MALICIOUS

PDF

36.6 KB Created: 2020-08-20 05:50:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c5e470781741fe0113090848cb223530 SHA-1: 525f9058cbab062555cb6fbe33dd621948ddbd88 SHA-256: 00b884043595303b5150088b42e91427ea6d5cab7bd1e58a2b8adbbe61ecd3a7
154 Risk Score

Malware Insights

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

The PDF document contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=batedeira+planet%25C3%25A1ria+oster+perform+inox+110v`. This indicates the document is likely designed to lure users to malicious sites. The presence of a large number of external PDF links further supports the attack pattern of a link farm, intended to obscure the ultimate destination and potentially distribute malware or conduct phishing. No scripts were extracted from this sample.

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=batedeira+planet%25C3%25A1ria+oster+perform+inox+110v
    • http://files.duettechnology.com/uploads/1/3/0/8/130874477/momefafafavo_pinukuwu_wosevirirufuma.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/9220/5978/files/ccrn_practice_questions_with_rationale.pdf
    • https://cdn.shopify.com/s/files/1/0437/6769/3474/files/sorority_resume_template_google_docs.pdf
    • https://cdn.shopify.com/s/files/1/0431/7049/6661/files/lanalidib.pdf
    • https://cdn.shopify.com/s/files/1/0464/9756/2776/files/84796598750.pdf
    • https://cdn.shopify.com/s/files/1/0434/0924/4317/files/xilomepewalezifedamew.pdf
    • https://cdn.shopify.com/s/files/1/0436/8583/9003/files/free_bartender_10._1.pdf
    • https://cdn.shopify.com/s/files/1/0430/9352/4634/files/94307683621.pdf
    • https://cdn.shopify.com/s/files/1/0438/6222/9157/files/grammaire_orthographe_franaise.pdf
    • https://cdn.shopify.com/s/files/1/0435/3648/2458/files/nufewax.pdf
    • https://cdn.shopify.com/s/files/1/0432/7692/7141/files/busybox_installer_no_root_apk.pdf
    • https://cdn.shopify.com/s/files/1/0430/0272/4506/files/lidefewivokiwewizarap.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43545787384.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_off00004e0c.bin
8976a96a537a8d62bdfa69e6c074cd64587f6d3307139ccfdc8cb34cfb73ab04
pdf-font-stream PDF embedded font (sfnt) at offset 0x4E0C 5792 bytes
font_01_sfnt_off0000611f.bin
f23a6bfd572e243a4385fe6360c8485652871d9dffb1c2306b98d4459c092437
pdf-font-stream PDF embedded font (sfnt) at offset 0x611F 10156 bytes