Malicious PDF — malware analysis report

Static analysis result for SHA-256 19c28844eaa77231…

MALICIOUS

PDF

64.0 KB Created: 2020-08-21 14:17:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57988541e7e907d2e7c5609f00e207ea SHA-1: 007dfeae548584e5d98715c17fd011cffa3478f0 SHA-256: 19c28844eaa772311a97c7846e5231a58d4b3d817f6e915d6779fdeffb00558e
148 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector pointing to 'https://ttraff.cc/pify?keyword=reliance+health+insurance+cashless+form'. The document body, though heavily obfuscated, contains text related to 'Reliance health insurance cashless form', aligning with the urgency and callback lures detected by heuristics. The presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious content broadly. No scripts were extracted from this sample.

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=reliance+health+insurance+cashless+form
    • http://files.ironbridge-analytics.com/uploads/1/3/1/6/131606730/8974769.pdf
    • http://files.oaa90.com/uploads/1/3/0/7/130775498/fa37e5f2d.pdf
    • https://cdn.shopify.com/s/files/1/0431/3006/0955/files/52877379397.pdf
    • https://cdn.shopify.com/s/files/1/0437/9744/6813/files/45683839143.pdf
    • https://cdn.shopify.com/s/files/1/0431/0486/2375/files/67501776749.pdf
    • https://cdn.shopify.com/s/files/1/0430/9860/3669/files/10113595569.pdf
    • https://cdn.shopify.com/s/files/1/0452/0479/9639/files/17585568688.pdf
    • https://cdn.shopify.com/s/files/1/0433/9869/3022/files/calligraphy_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0435/2425/9992/files/jexikeborijibavom.pdf
    • https://cdn.shopify.com/s/files/1/0450/1340/1764/files/32212361294.pdf
    • https://cdn.shopify.com/s/files/1/0428/1804/4063/files/vixiwaromifilujazimos.pdf
    • https://cdn.shopify.com/s/files/1/0429/1038/4295/files/17996102162.pdf
    • https://cdn.shopify.com/s/files/1/0430/8975/6311/files/35431200755.pdf
    • https://cdn.shopify.com/s/files/1/0433/2778/3080/files/aprender_a_desenhar.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_off0000aff6.bin
30a65f48f7eb1110b6e656547e785d2256dbab52fec6bee7d12c52ecdaae1a4f
pdf-font-stream PDF embedded font (sfnt) at offset 0xAFF6 5008 bytes
font_01_sfnt_off0000c0cc.bin
d873fab26680636d53fe8a355d083dcc48d6c5d442f338657919ebc1bfe4d56b
pdf-font-stream PDF embedded font (sfnt) at offset 0xC0CC 10536 bytes
font_02_sfnt_off0000e4cd.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0xE4CD 4324 bytes