Malicious PDF — malware analysis report

Static analysis result for SHA-256 14f5f4950137d0f8…

MALICIOUS

PDF

43.8 KB Created: 2020-08-19 13:29:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ace9c6e519ba27abfd48f5497fc7f6ff SHA-1: 2f8b13586d2e553be9aa472488011e602f3dbcfd SHA-256: 14f5f4950137d0f88c02d213a063da520ceae3aba7c5f77c2d9dc6676b548883
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure, specifically a URL related to 'pan card offline form sending address'. The document body, though heavily obfuscated, contains this same URL and numerous other links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern involves tricking users into clicking the malicious link, likely leading to a phishing or malware download site.

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=pan+card+offline+form+sending+address
    • http://files.eastsideserves.org/uploads/1/3/1/4/131483955/soxuwimixapus.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/5078/5173/files/parsehub_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/65930602470.pdf
    • https://cdn.shopify.com/s/files/1/0433/9240/1566/files/suwebenomipukuk.pdf
    • https://cdn.shopify.com/s/files/1/0438/0003/5490/files/bahubali_movie_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0434/8857/5638/files/lemidosoravubopodifop.pdf
    • https://cdn.shopify.com/s/files/1/0434/1760/0152/files/44115954738.pdf
    • https://cdn.shopify.com/s/files/1/0431/6738/3712/files/kedinefewiparujuluvekejij.pdf
    • https://cdn.shopify.com/s/files/1/0432/3088/8094/files/jobin.pdf
    • https://cdn.shopify.com/s/files/1/0431/4474/1024/files/vopewaradijezexo.pdf
    • https://cdn.shopify.com/s/files/1/0438/0744/1053/files/aosp_launcher_pro_apk.pdf
    • https://cdn.shopify.com/s/files/1/0435/6849/6798/files/98287098829.pdf
    • https://cdn.shopify.com/s/files/1/0430/0200/3619/files/gumikopefugawegu.pdf
    • https://cdn.shopify.com/s/files/1/0429/1851/0745/files/9987810130.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000637a.bin
45e5eb40471793d6f6fbdf90a0a3138216300ed4a358aa3edc981eb80eaae673		 pdf-font-stream PDF embedded font (sfnt) at offset 0x637A 5340 bytes
font_01_sfnt_off0000757b.bin
21a7146106e2ad29a4dcc6aa55cee169416400570e2b3d493b6d071cb256f2f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x757B 1936 bytes
font_02_sfnt_off00007ebd.bin
7b06ab1c486ba6a8f2a62194e2d5ce74c3ff4f59c631f645c9089a570075b19e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EBD 10112 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.