Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b0c469879af02b7…

MALICIOUS

PDF

43.9 KB Created: 2020-08-21 10:39:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 632c6068dc5bb4b8c72820f7a7ce2840 SHA-1: ade3454f8ff52d625fd25addb44b869dc6b84a0c SHA-256: 1b0c469879af02b73c68ac9742ab5548f79336c092abc9284a2258e0d73180aa
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body text, though partially corrupted, suggests a lure related to 'Tamil songs ringtone'. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to distribute malicious content. The primary malicious URL identified is https://ttraff.ru/pify?keyword=tamil+songs+ringtone+to, which is likely used to redirect the user to a secondary payload.

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.ru/pify?keyword=tamil+songs+ringtone+to
    • http://files.woodrocksiws.com/uploads/1/3/1/4/131412235/wuredanusolitum.pdf
    • https://cdn.shopify.com/s/files/1/0431/7554/2950/files/pegusafutexi.pdf
    • https://cdn.shopify.com/s/files/1/0433/4390/4927/files/vezadesojimumidex.pdf
    • https://cdn.shopify.com/s/files/1/0434/1016/1820/files/bawagof.pdf
    • https://cdn.shopify.com/s/files/1/0430/8713/4882/files/historia_del_acoso_escolar.pdf
    • https://cdn.shopify.com/s/files/1/0437/2496/3990/files/around_the_world_in_80_days_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/6451/7023/files/zelowati.pdf
    • https://cdn.shopify.com/s/files/1/0433/6392/6174/files/report_developer_analyst_salary.pdf
    • https://cdn.shopify.com/s/files/1/0427/8488/2844/files/45921897329.pdf
    • https://cdn.shopify.com/s/files/1/0430/0842/6143/files/45422235021.pdf
    • https://cdn.shopify.com/s/files/1/0437/7778/6018/files/81009853019.pdf
    • https://cdn.shopify.com/s/files/1/0436/6126/3001/files/waterfall_model_in_sdlc.pdf
    • https://cdn.shopify.com/s/files/1/0440/4792/5413/files/naforogirukexegiwut.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_off00005467.bin
042ec6b3144473cdcdaddc8a37c5dc47bb8f5698af8a6cb7cb99b7780a0511a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5467 4956 bytes
font_01_sfnt_off00006523.bin
d45a6d699242ed810ebf47dc6fa12f2b9330f63ee3facfcb348576397adfbbc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6523 5300 bytes
font_02_sfnt_off0000763d.bin
74158bebc12e74ef39ab996cb0f61af04425fe002eb9fbb6045842bca10de255		 pdf-font-stream PDF embedded font (sfnt) at offset 0x763D 14052 bytes

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