Malicious PDF — malware analysis report

Static analysis result for SHA-256 34b2cc6d35985d86…

MALICIOUS

PDF

75.9 KB Created: 2020-08-24 20:09:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ee45a3133f33085caa7a0ad1f7409f16 SHA-1: d47c8dc0a5385d4b2f786275b52bce678d109903 SHA-256: 34b2cc6d35985d86b22716658f6af32674b8972ea11f56915977a188676956d9
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, indicating a phishing or malware delivery attempt. The document body, though heavily obfuscated, contains the same URL as the malicious link, reinforcing the lure. The presence of numerous external PDF links, many pointing to Shopify, suggests a link farm or SEO poisoning tactic to obscure the malicious destination. No scripts were extracted, limiting the analysis of direct execution.

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.com/pify?keyword=bbl+fixtures+2018%252F+19+pdf
    • http://tobawav.x-tremeav.com/uploads/1/3/2/6/132682646/ximakazufi_pevabomaw_mokagenaxigu_zeremizi.pdf
    • http://files.highperformancecoachkelly.com/uploads/1/3/1/4/131411688/meripurid-xubewo.pdf
    • http://mumaroda.brainintegration.net/uploads/1/3/1/4/131405962/1bb5b99e01243f.pdf
    • http://files.glasshorseranch.com/uploads/1/3/1/4/131407493/3181862.pdf
    • https://cdn.shopify.com/s/files/1/0433/0097/8853/files/intestinal_obstruction_management.pdf
    • https://cdn.shopify.com/s/files/1/0433/5583/2471/files/sijapuzewafedozavolerumo.pdf
    • https://cdn.shopify.com/s/files/1/0465/9642/3845/files/calculix_user_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sivezijikok.pdf
    • https://cdn.shopify.com/s/files/1/0432/0939/2285/files/8399281445.pdf
    • https://cdn.shopify.com/s/files/1/0438/4797/5062/files/catlogo_mary_kay_julio_2020.pdf
    • https://cdn.shopify.com/s/files/1/0435/2786/4469/files/levala.pdf
    • https://cdn.shopify.com/s/files/1/0428/1463/6198/files/rifts_sourcebook.pdf
    • https://cdn.shopify.com/s/files/1/0437/3191/0821/files/beginner_level_english_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0440/7925/1608/files/96201137442.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/28664871254.pdf
    • https://cdn.shopify.com/s/files/1/0431/5031/1579/files/67359695296.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d439.bin
7ced00d25376d159ea0c6131b885d42d0e957e468a6bd7875f182785cbbe102e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD439 5796 bytes
font_01_sfnt_off0000e808.bin
62d94d06e19982710657095f34d8ccaf067e43edee82cf56070048ad7a8e2b63		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE808 1880 bytes
font_02_sfnt_off0000f11e.bin
8111fa33dbae735f10b71193a5477fb4b4ce5032e7c685770de844b268c5bd7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF11E 15900 bytes

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