Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c837de08d6515c3…

MALICIOUS

PDF

39.3 KB Created: 2020-08-06 21:30:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 041230b1135b9dbe115dd8a98f459c49 SHA-1: ee1a5014e6c023f07ff6bc486d34492346f6d87b SHA-256: 1c837de08d6515c3596121a49ab76310992b327b2576ee95769900a5680eb033
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that the URL https://ttraff.com/pify?keyword=alice+and+wonderland+jr+script+pdf leads to known malicious infrastructure. The 'PDF_SEO_LINK_FARM' heuristic further suggests a large number of external links, many hosted on cdn.shopify.com, which is a common tactic for SEO poisoning or distributing malicious content. The document body, though heavily obfuscated, contains the malicious URL, reinforcing the attack pattern.

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.
  • 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.com/pify?keyword=alice+and+wonderland+jr+script+pdf
    • http://files.katebond.org/uploads/1/3/0/7/130775592/1d9924fb10a.pdf
    • http://files.fatherheart.me/uploads/1/3/1/0/131070011/474595e.pdf
    • http://files.uccloverdale.org/uploads/1/3/0/7/130775850/1713982.pdf
    • http://files.individualee.com/uploads/1/3/0/7/130776246/linejofamifatowizu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81159011373.pdf
    • https://cdn.shopify.com/s/files/1/0438/6550/5952/files/rokorafek.pdf
    • https://cdn.shopify.com/s/files/1/0432/4681/3344/files/60471231191.pdf
    • https://cdn.shopify.com/s/files/1/0431/0269/9681/files/843304695.pdf
    • https://cdn.shopify.com/s/files/1/0427/8085/2383/files/example_storing_strings_in_eeprom.pdf
    • https://cdn.shopify.com/s/files/1/0431/5804/4826/files/vabavojunivofibuxabedu.pdf
    • https://cdn.shopify.com/s/files/1/0429/1143/2857/files/tewodurakasavax.pdf
    • https://cdn.shopify.com/s/files/1/0430/6350/9141/files/mebilo.pdf
    • https://cdn.shopify.com/s/files/1/0437/1978/6645/files/roxikevinikidugopowomobet.pdf
    • https://cdn.shopify.com/s/files/1/0429/2981/5711/files/gtx_770_vs_1060.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_off00005921.bin
af41a526d4a9a32ade76c32981be12cfdc79034aadd864f7dc48bb9811039f18
pdf-font-stream PDF embedded font (sfnt) at offset 0x5921 5308 bytes
font_01_sfnt_off00006b58.bin
f582c736ff42d3a6a8f48822a9307a7596dc7752b239e490f604fe6d1efd6acd
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B58 10968 bytes