Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7d64446b541c4d5…

MALICIOUS

PDF

44.5 KB Created: 2020-08-25 01:12:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e94d9bb64acac431e36de44351f3ba3a SHA-1: dc119a9610ff6a42b403e1c336a9a85b19c34c2a SHA-256: b7d64446b541c4d5e3995257a636f150f69ff4d59f3f378cbb94b8eb34d79882
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a lure related to SQLite databases on Android, but the embedded link redirects to a malicious domain (ttraff.cc). This indicates a phishing or social engineering attack. The presence of a mass external PDF link farm further supports the malicious intent, likely to distribute further payloads or engage in SEO poisoning. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=abrir+base+de+datos+sqlite+android
    • http://files.klshistory.co.uk/uploads/1/3/1/8/131856380/tisoronufode.pdf
    • http://files.bigislandbowls.com/uploads/1/3/1/3/131381363/d17f8a301d0.pdf
    • http://biwoxariv.mhes-ses-bandstrings.com/uploads/1/3/0/7/130776132/83f9b973bfd75e6.pdf
    • https://cdn.shopify.com/s/files/1/0436/7895/7718/files/borderlands_3_season_pass_ps4_not_ing.pdf
    • https://cdn.shopify.com/s/files/1/0438/2624/9885/files/76717394195.pdf
    • https://cdn.shopify.com/s/files/1/0432/9455/6320/files/925103624.pdf
    • https://cdn.shopify.com/s/files/1/0431/2412/9946/files/kogaza.pdf
    • https://cdn.shopify.com/s/files/1/0430/8893/7120/files/mewusebetijurupidow.pdf
    • https://cdn.shopify.com/s/files/1/0430/0744/3103/files/xazipegunagu.pdf
    • https://cdn.shopify.com/s/files/1/0447/7665/2949/files/volkswagen_vanagon_official_factory_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/8869/9802/files/luzelajonivikos.pdf
    • https://cdn.shopify.com/s/files/1/0437/4337/9617/files/1994_ford_f150_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/5444/8286/files/dubuki.pdf
    • https://cdn.shopify.com/s/files/1/0440/1093/0341/files/15873887713.pdf
    • https://cdn.shopify.com/s/files/1/0438/9391/5800/files/jozexipokuredamezanugeva.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51507598499.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_off00005d8b.bin
93dfbd133e4719a86191e93326a1dcad070e2275a1b1f1087b3adea1a6cbfba2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D8B 4860 bytes
font_01_sfnt_off00006e09.bin
ec5196200794d95146dbb7b10206b8328b0436e678712e4a293e4fe7e66dbe4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E09 12760 bytes
font_02_sfnt_off00009719.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9719 4324 bytes

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