Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c79b0061d833df4…

MALICIOUS

PDF

37.4 KB Created: 2020-08-05 00:58:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c000bacfc9117e025468aa58349bbcf SHA-1: 1e512f24ed9bd7f99ee90a01d3d8fa3608c06f67 SHA-256: 0c79b0061d833df4a717df311f1bdc07d79c0d08b1b3b127c8e14386affe199f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The primary link, 'https://ttraff.cc/pify?keyword=wings+of+fire+book+12+pdf+free', is designed to lure users into downloading content, likely leading to further malicious activity. The ML classifier also strongly indicated maliciousness.

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=wings+of+fire+book+12+pdf+free
    • http://files.elim-jma.org/uploads/1/3/0/9/130969876/midepevisibatu-taxamima.pdf
    • http://files.helcomarmiltd.com/uploads/1/3/0/9/130969904/8a8b090a07b.pdf
    • http://files.bostonareamaskinitiative.com/uploads/1/3/1/4/131453998/9385768.pdf
    • http://files.beso.co.nz/uploads/1/3/2/7/132740682/a3d08262ae3.pdf
    • http://zozamesu.elimscandia.org/uploads/1/3/1/3/131381464/3706822.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/1555/2672/files/53933435079.pdf
    • https://cdn.shopify.com/s/files/1/0430/8749/5321/files/bauhaus_93_font.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65028435792.pdf
    • https://cdn.shopify.com/s/files/1/0431/5240/8742/files/16721411903.pdf
    • https://cdn.shopify.com/s/files/1/0432/5202/3458/files/59215319136.pdf
    • https://cdn.shopify.com/s/files/1/0438/2962/4982/files/wowiperumu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0846/6845/files/breaking_bad_news_to_patients.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fufabolip.pdf
    • https://cdn.shopify.com/s/files/1/0431/5077/0333/files/66375860576.pdf
    • https://cdn.shopify.com/s/files/1/0431/5371/9453/files/39057725884.pdf
    • https://cdn.shopify.com/s/files/1/0428/1391/5303/files/nebuxotuxapoba.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_off00005255.bin
4f151116416556afd8a3aca7b1a568ec2023309071999544555b30f438c595cc
pdf-font-stream PDF embedded font (sfnt) at offset 0x5255 5368 bytes
font_01_sfnt_off000064c5.bin
a03ec898e20a62443823fd9058820358e81648cb2c61f260f3f537ec7623db1e
pdf-font-stream PDF embedded font (sfnt) at offset 0x64C5 10228 bytes