Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b996c2f81c7ee7e…

MALICIOUS

PDF

48.6 KB Created: 2020-08-18 20:40:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c78b66c04087bc1f03bc5e1e692b73cc SHA-1: e20d15a0fe6dd48f780c9cebbbd3eea7c043f57c SHA-256: 1b996c2f81c7ee7e18478852851c0cf141c839a430d3e6752d9bd1f8378f49ab
128 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to its inclusion of a link farm containing numerous external PDF links, with one critical link pointing to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=pediatric+febrile+neutropenia+guidelines+2017', which is flagged as a malicious redirector. This suggests the document's primary purpose is to lure users to malicious sites.

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.cc/pify?keyword=pediatric+febrile+neutropenia+guidelines+2017
    • http://files.reaganinmyownworld.com/uploads/1/3/0/7/130738614/f277a2dd.pdf
    • http://nabopaler.personcoeducationfoundation.org/uploads/1/3/1/3/131379678/gurunogokos.pdf
    • http://japanak.peacecorpsunion.com/uploads/1/3/1/8/131871390/saxerulovajasulunez.pdf
    • https://cdn.shopify.com/s/files/1/0438/4302/7106/files/4098762061.pdf
    • https://cdn.shopify.com/s/files/1/0448/0358/8258/files/84311017962.pdf
    • https://cdn.shopify.com/s/files/1/0433/6048/5541/files/22719275.pdf
    • https://cdn.shopify.com/s/files/1/0435/1908/2655/files/13364729546.pdf
    • https://cdn.shopify.com/s/files/1/0429/6641/7571/files/22980256226.pdf
    • https://cdn.shopify.com/s/files/1/0434/6983/2354/files/anemia_kekurangan_zat_besi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8667/6135/files/hallelujah_choir_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0438/8211/9323/files/47072491381.pdf
    • https://cdn.shopify.com/s/files/1/0434/5036/8152/files/82375886.pdf
    • https://cdn.shopify.com/s/files/1/0431/6302/5559/files/barricades_mystrieuses.pdf
    • https://cdn.shopify.com/s/files/1/0430/6350/9146/files/7146395340.pdf
    • https://cdn.shopify.com/s/files/1/0435/7164/2527/files/adobe_illustrator_cs2_tutorials_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0432/0044/6626/files/30432454531.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_off00007c2f.bin
d24026c4a666a8b5e06e4ac71ee46e250a67b539f73b637ac42e8580a7f00910
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C2F 5872 bytes
font_01_sfnt_off0000903f.bin
52cc1e9d0a6d2bd2ec128d27fbb647987e8ae1e64b23ea78bf27d876d54c87f2
pdf-font-stream PDF embedded font (sfnt) at offset 0x903F 10816 bytes