Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ec96f1e03dc3395…

MALICIOUS

PDF

46.1 KB Created: 2020-08-03 13:03:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae83dbb52981e45a2b656e538c113d19 SHA-1: a1d7227f4540fa14eef1cadbdd19f3d58ce33249 SHA-256: 7ec96f1e03dc3395a932c05c57e823405048386e3837b92fee181bc03fb2cc64
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to 'Black s law dictionary 12th edition pdf', suggesting a lure to download a potentially malicious file. The presence of numerous external links, including one to a malicious redirector, indicates an attempt to direct users to harmful content.

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=black+s+law+dictionary+12th+edition+pdf
    • http://files.hamlintownshipmi.com/uploads/1/3/1/4/131453917/linamujapulifebub.pdf
    • http://files.mtagate.org/uploads/1/3/0/8/130874569/gasuvudu.pdf
    • http://files.facchollywood.org/uploads/1/3/1/4/131438419/diwazanaju.pdf
    • http://files.counseling2transform.com/uploads/1/3/2/7/132740494/tudexodekoge_gajom_jutos_sabipud.pdf
    • http://sobipojod.actionsportsracing.com/uploads/1/3/1/4/131453054/jojuwigutibifofo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vololo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9295/9642/files/91661304409.pdf
    • https://cdn.shopify.com/s/files/1/0431/6073/1803/files/abnormal_psychology_comer_8th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0435/1187/3688/files/dejaz.pdf
    • https://cdn.shopify.com/s/files/1/0434/8051/4726/files/79467283178.pdf
    • https://cdn.shopify.com/s/files/1/0431/4890/2554/files/patarefekejugorigofuxa.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3854/files/40557066324.pdf
    • https://cdn.shopify.com/s/files/1/0430/4027/6642/files/the_giver_resolution.pdf
    • https://cdn.shopify.com/s/files/1/0434/0213/3667/files/lefazuzibu.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/79915271246.pdf
    • https://cdn.shopify.com/s/files/1/0433/9610/4348/files/34043493381.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_off00006622.bin
699981b55295575fecce3e548ddb55615b9be3e8b7e3fc6bb294a5f4070853b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6622 5524 bytes
font_01_sfnt_off000078fc.bin
a257ea11f4582a0a9d466fdbde6c864d7c205f65996628ad9f8d5513132eb929		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78FC 10848 bytes
font_02_sfnt_off00009d45.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D45 4324 bytes

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