Malicious PDF — malware analysis report

Static analysis result for SHA-256 60ee008488387efb…

MALICIOUS

PDF

57.3 KB Created: 2020-08-12 02:48:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 072059da938fe79e0f609fe13bfad7b7 SHA-1: a19091afea724f049a4c5bb3b66ad79307d52c7c SHA-256: 60ee008488387efb46e49fc31fa63527c88db8f7379cd2f689f9b7f3a39e76e9
154 Risk Score

Malware Insights

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

The PDF contains numerous links to external PDF files, a common tactic for SEO spam or link farms, with one link identified as a malicious redirector. The ML classifier strongly flagged this PDF as malicious, and the embedded URL points to a known malicious domain. While no scripts were extracted, the structure and linked content suggest a malicious intent to redirect users to harmful sites.

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.ru/pify?keyword=anemia+por+deficiencia+de+hierro+oms+pdf
    • http://files.oceanviewpatriots.com/uploads/1/3/0/7/130776489/ranagavopa.pdf
    • http://files.submergefamilychurch.com/uploads/1/3/1/3/131379894/2977208.pdf
    • http://files.iansaderholm.com/uploads/1/3/2/8/132814250/wataxen-konemo-xitogep.pdf
    • http://rokewa.benjaminthieme.com/uploads/1/3/1/8/131856919/5f1d73f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tulajemo.pdf
    • https://cdn.shopify.com/s/files/1/0439/1842/6267/files/89026099959.pdf
    • https://cdn.shopify.com/s/files/1/0432/4887/7736/files/puvilebunabalolujiwok.pdf
    • https://cdn.shopify.com/s/files/1/0437/4380/5594/files/physical_metallurgy_principles_solution_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/3776/9383/files/gexogazalaledigovazevabo.pdf
    • https://cdn.shopify.com/s/files/1/0436/0136/3107/files/77323748605.pdf
    • https://cdn.shopify.com/s/files/1/0438/2959/2214/files/basic_construction_materials_8th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0447/4827/5863/files/global_digital_ad_spend_2020.pdf
    • https://cdn.shopify.com/s/files/1/0436/5362/8062/files/42627315493.pdf
    • https://cdn.shopify.com/s/files/1/0431/8262/0834/files/38492652207.pdf
    • https://cdn.shopify.com/s/files/1/0435/3989/0327/files/24007271766.pdf
    • https://cdn.shopify.com/s/files/1/0428/1086/7871/files/57781179313.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_off0000a069.bin
c908d66cb97cfd6fb8aa27f4eb00f2dd1c6fddd1f728c93ce5a4561ccbd2b11b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA069 5352 bytes
font_01_sfnt_off0000b261.bin
a08e092e457db342f56917ad9c36a6770a650f0845b067aeb893a9ed463ca6e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB261 10940 bytes

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