Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8a58fa5d203ebb2…

MALICIOUS

PDF

41.8 KB Created: 2020-09-16 14:40:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 16e68a6dd5f49b1bba2a887f05a3c08b SHA-1: 3427529c0fdccfba17f7d107c853fc2d3a2ded21 SHA-256: d8a58fa5d203ebb2151470ff71209ca3296c69a01a78161a09a65cb423c6987e
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with the primary heuristic identifying a link to a known malicious redirector infrastructure. The document body also contains the URL 'https://ttraff.club/wix?keyword=fifa+mobile+apk+obb+offline', which is likely intended to trick users into downloading malicious content. The presence of a link farm further supports the malicious intent of directing users to potentially harmful sites.

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.club/wix?keyword=fifa+mobile+apk+obb+offline
    • http://jenetufet.vinylbandits.com/uploads/1/3/1/0/131070382/720dc0.pdf
    • http://xosuvaj.bonneygirlphotography.com/uploads/1/3/0/8/130813834/nidokepo.pdf
    • http://fuxini.htm-cornwall.com/uploads/1/3/1/4/131406082/pikulosaj.pdf
    • http://files.aygocm.co.uk/uploads/1/3/1/4/131438557/d49b7.pdf
    • http://files.nicom.com/uploads/1/3/1/8/131857305/lelivowukob.pdf
    • http://files.muphipvsouthbay.org/uploads/1/3/1/3/131379803/2923855.pdf
    • http://files.muphipvs
    • https://cdn.shopify.com/s/files/1/0431/6967/7474/files/she_bangs_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0432/4291/3955/files/power_electronics_daniel_hart_solution_manual_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/9048/5150/files/deductive_and_inductive_reasoning_examples.pdf
    • https://cdn.shopify.com/s/files/1/0429/5111/4908/files/simple_admin_template_bootstrap_3.pdf
    • https://cdn.shopify.com/s/files/1/0437/5930/4858/files/git_config_alias.pdf
    • https://cdn.shopify.com/s/files/1/0434/0642/6266/files/jobuxabuzoxefi.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_off00006717.bin
4b80aad0256d94c6ff1f57f9592f0aab17cf6ff8b54ad7ec30c929c6fb134ebc
pdf-font-stream PDF embedded font (sfnt) at offset 0x6717 4932 bytes
font_01_sfnt_off000077d8.bin
96e539026a5921e538b698e8ec18d494583c63aac959e3e4c4293a7be970cdbf
pdf-font-stream PDF embedded font (sfnt) at offset 0x77D8 10112 bytes