Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ddee015b5bbc032…

MALICIOUS

PDF

143.6 KB Created: 2020-08-10 02:53:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 917c0a2718222db64ca05f925f85e9aa SHA-1: fe450dd694403fe240f23062f48f28f18b198976 SHA-256: 5ddee015b5bbc032fe402f0f63640a0a066b1faad04f399b36dd7e2cf8515ce2
154 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be the primary lure. The presence of many external links suggests an attempt to distribute malicious content or engage in SEO manipulation for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=effects+of+lead+pdf
    • http://files.it10.co.uk/uploads/1/3/1/8/131871586/tagadanotav.pdf
    • http://files.rcmantaray.com/uploads/1/3/1/6/131607093/wivavadonoras_kuragukobaf.pdf
    • http://files.krispykleanautospa.com/uploads/1/3/2/6/132681772/3c2763.pdf
    • http://files.6pointfarm.com/uploads/1/3/1/6/131606111/simoxuxagewe.pdf
    • http://files.cicenvironment.ca/uploads/1/3/0/7/130739024/naboxulabolawevare.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/5731/4977/files/85626274505.pdf
    • https://cdn.shopify.com/s/files/1/0434/0409/9735/files/pefotunegutijabemuxosuwaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/5009/8085/files/totedogaxotibe.pdf
    • https://cdn.shopify.com/s/files/1/0428/8492/3555/files/jasorenekaworinumebag.pdf
    • https://cdn.shopify.com/s/files/1/0431/3609/0269/files/surat_ar_rahman_dan_terjemahannya.pdf
    • https://cdn.shopify.com/s/files/1/0429/3391/1705/files/fixebetefafesuzeresovej.pdf
    • https://cdn.shopify.com/s/files/1/0429/3555/0118/files/74047006423.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/10809735118.pdf
    • https://cdn.shopify.com/s/files/1/0430/8421/8521/files/siwufatirezesuwuwunez.pdf
    • https://cdn.shopify.com/s/files/1/0430/4207/8877/files/18708983069.pdf
    • https://cdn.shopify.com/s/files/1/0437/3735/0309/files/78884942641.pdf
    • https://cdn.shopify.com/s/files/1/0427/7354/5116/files/alternator_and_generator.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_off0001f1e2.bin
8d220ad86ca86dc8049894a81200cd43aba3da987e0eec08de3a20401ef663da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1F1E2 5008 bytes
font_01_sfnt_off0002030d.bin
1a64a572112ab1435f0730dd862becddbe221f24799a8557d749620265aa4c1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2030D 14756 bytes

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