Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7ffb02924cf7b15…

MALICIOUS

PDF

45.2 KB Created: 2020-08-15 12:44:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c987ca056d061aa0b23ec60b8b407ddd SHA-1: e8c2fc341c22dd545b0c2c0b1b112db8d692b5d9 SHA-256: b7ffb02924cf7b15ff6546063df0877c267cc19de8d9718e800ccebce7b293a6
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by multiple critical heuristics indicating malicious redirector links and a link farm. The document body contains the URL https://ttraff.cc/pify?keyword=beneteau+oceanis+473+manual, which is a known malicious redirector. The presence of numerous embedded links, many pointing to potentially benign Shopify domains but also including suspicious custom domains, suggests a broad distribution attempt. The ML classifier strongly supports the malicious verdict.

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=beneteau+oceanis+473+manual
    • http://fadibi.oregonsiberiancats.com/uploads/1/3/0/8/130814328/fixudabatebubelit.pdf
    • http://files.katyweirich.com/uploads/1/3/0/7/130738597/6589787.pdf
    • http://files.mrstuckeysclass.com/uploads/1/3/0/7/130776841/4143467.pdf
    • http://files.reclaiminghopecounseling.com/uploads/1/3/1/4/131453421/85b72015db8eab.pdf
    • https://cdn.shopify.com/s/files/1/0428/2135/3639/files/apostila_autocad_civil_3d_2020.pdf
    • https://cdn.shopify.com/s/files/1/0451/3264/4505/files/antrenmanlarla_matematik_2_cevap_anahtar.pdf
    • https://cdn.shopify.com/s/files/1/0433/9764/4449/files/tupirirumodoj.pdf
    • https://cdn.shopify.com/s/files/1/0437/9167/9648/files/fury_warrior_pre_raid_bis_vanilla.pdf
    • https://cdn.shopify.com/s/files/1/0430/1278/4277/files/93799848511.pdf
    • https://cdn.shopify.com/s/files/1/0436/1833/6925/files/lalebexa.pdf
    • https://cdn.shopify.com/s/files/1/0432/9065/6921/files/rupawozenugadam.pdf
    • https://cdn.shopify.com/s/files/1/0430/4856/6933/files/bp_tyagi_public_finance.pdf
    • https://cdn.shopify.com/s/files/1/0434/1576/5153/files/vintage_vending_machine.pdf
    • https://cdn.shopify.com/s/files/1/0432/3305/0779/files/rerorizanewivedenisa.pdf
    • https://cdn.shopify.com/s/files/1/0434/1481/4885/files/5113741464.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066ea.bin
e418fa3bb4063558e3951873218a1148c3153e926c71faa4fc17466bc1a63ac6
pdf-font-stream PDF embedded font (sfnt) at offset 0x66EA 5232 bytes
font_01_sfnt_off000078af.bin
84c1554f1733ac01f83787a3e5bd5889822212dd2b37135ac2c785a5c4d40bb9
pdf-font-stream PDF embedded font (sfnt) at offset 0x78AF 15100 bytes