Malicious PDF — malware analysis report

Static analysis result for SHA-256 c27c09b2891e3ceb…

MALICIOUS

PDF

63.8 KB Created: 2020-08-10 14:22:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff5725023f59d0d4fdb1a739479683d4 SHA-1: 8c822503ba604d1dbb7c2e9f7f43f5a6c515597a SHA-256: c27c09b2891e3cebe2d14e4ab59e5bfd9b2b812c6af4140a30883cb974c93711
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=sound+pollution+information+in+marathi+language+pdf'. This indicates the document is designed to redirect users to malicious infrastructure. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility and lure victims. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing its malicious intent.

Heuristics 3

  • 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.
  • 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=sound+pollution+information+in+marathi+language+pdf
    • http://files.m3df.org/uploads/1/3/1/3/131384442/1102f81d8.pdf
    • http://dukuzif.fendragonsandmore.com/uploads/1/3/1/8/131856907/xusiri.pdf
    • http://files.daviddenson.net/uploads/1/3/1/4/131408854/zejoromamu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mevebetivegukubevam.pdf
    • https://cdn.shopify.com/s/files/1/0430/1268/5977/files/sesatekafepaj.pdf
    • https://cdn.shopify.com/s/files/1/0437/4082/3706/files/2004_fleetwood_prowler_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/8428/3033/files/84463632546.pdf
    • https://cdn.shopify.com/s/files/1/0439/6669/3534/files/autocad_2020_tutorial_for_mechanical_engineering.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rabilividobakomitunaxizug.pdf
    • https://cdn.shopify.com/s/files/1/0431/0020/9319/files/41635761430.pdf
    • https://cdn.shopify.com/s/files/1/0428/4914/0902/files/57675135944.pdf
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/dicionario_hebraico_portugues_em.pdf
    • https://cdn.shopify.com/s/files/1/0437/7218/2685/files/1984_niv_bible.pdf
    • https://cdn.shopify.com/s/files/1/0428/2574/4540/files/94817205244.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_off0000ae79.bin
4484f18cfa476d3b434ca4258f753e941b8971138005d4073bbd4e1c2668bd09
pdf-font-stream PDF embedded font (sfnt) at offset 0xAE79 5264 bytes
font_01_sfnt_off0000c02a.bin
e4c5e12dd9c1c50d12f4721d5897c7fbd1b147d96b1709a4e838e8d8b147f039
pdf-font-stream PDF embedded font (sfnt) at offset 0xC02A 10488 bytes
font_02_sfnt_off0000e40b.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0xE40B 4324 bytes