Malicious PDF — malware analysis report

Static analysis result for SHA-256 0479f38b9a6d0459…

MALICIOUS

PDF

50.5 KB Created: 2020-08-12 14:27:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63d750010bf8fbeaafd604a64a9c9a84 SHA-1: 44f8ab0069cc8629f84d7fb42ceadc280713a040 SHA-256: 0479f38b9a6d04595ac92b82a03cca722658fe112d040551c71b3aef8d2b96b2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with one critical heuristic identifying a link to known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=butchery+business+plan+kenya+pdf'. The document body, though heavily obfuscated, appears to contain text related to a business plan, suggesting a lure. The presence of many external PDF links, some pointing to potentially malicious domains, indicates a link farm or redirection strategy for malware distribution or phishing.

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=butchery+business+plan+kenya+pdf
    • http://lefawel.fadedaf.shop/uploads/1/3/1/4/131406436/8789696.pdf
    • http://fajoguvik.mindfulthanet.com/uploads/1/3/2/8/132814930/9435df5e907a00.pdf
    • http://furuvir.holleyslandscaping.com/uploads/1/3/1/8/131856772/siroxasin-vapemopijago-vawovaxofajunor.pdf
    • http://files.boshamretreats.co.uk/uploads/1/3/1/4/131407152/wozinewefokiji.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/77603359417.pdf
    • https://cdn.shopify.com/s/files/1/0431/7675/5349/files/8303921188.pdf
    • https://cdn.shopify.com/s/files/1/0435/9654/6216/files/83839799656.pdf
    • https://cdn.shopify.com/s/files/1/0432/0899/9072/files/mckinsey_casebook.pdf
    • https://cdn.shopify.com/s/files/1/0432/8616/7702/files/62798421770.pdf
    • https://cdn.shopify.com/s/files/1/0435/1187/3695/files/88233914023.pdf
    • https://cdn.shopify.com/s/files/1/0429/3564/8409/files/1869286874.pdf
    • https://cdn.shopify.com/s/files/1/0435/0545/1160/files/anthrax_in_cattle.pdf
    • https://cdn.shopify.com/s/files/1/0432/0677/0849/files/moduxakegimaladobirebekun.pdf
    • https://cdn.shopify.com/s/files/1/0428/2515/4716/files/37045625615.pdf
    • https://cdn.shopify.com/s/files/1/0430/2536/7193/files/murefilibenib.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_off0000869b.bin
1eab34b893e162e4b0176102cf301e8c58a8fe3dcafe3745f8f34551f0ce8a3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x869B 5600 bytes
font_01_sfnt_off000099a4.bin
f1454c6bdf68007692f2aada2a86f656b4e762d8579af01dda3f83cb9a12716b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99A4 10428 bytes

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