Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ce3d15175a99dc2…

MALICIOUS

PDF

45.2 KB Created: 2020-08-10 08:47:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 604cf0b92a6b73e2b927dd4eb488ce53 SHA-1: 35534ded0453417746b369cdfab7e575c63e2fcb SHA-256: 1ce3d15175a99dc23521c4a05b5c89c6739f2984e06eb6db3ca350528f5c5640
120 Risk Score

Malware Insights

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

The PDF contains numerous links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.cc/pify?keyword=publicity+definition+pdf. The document body, though heavily obfuscated, also contains this URL and other PDF links, suggesting a link farm or redirection scheme designed to lead users to malicious content. No scripts were extracted, but the PDF structure and link farm heuristic strongly suggest a delivery mechanism for further malicious activity.

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=publicity+definition+pdf
    • http://doradela.suttonathomealpacas.com/uploads/1/3/1/0/131070859/5254e4794dabc.pdf
    • http://files.scarlettcrawford.com/uploads/1/3/1/0/131071258/bokajudaz.pdf
    • http://jipususib.rosehillplayers.net/uploads/1/3/1/3/131383483/nipudapitufun.pdf
    • http://files.mrscoopersblog.com/uploads/1/3/1/6/131606349/vepomenogunotow_loluvumizevok_minurukukegizu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3421/4561/files/aspen_plus_getting_started.pdf
    • https://cdn.shopify.com/s/files/1/0434/1635/4978/files/nizisusiweso.pdf
    • https://cdn.shopify.com/s/files/1/0433/1179/2286/files/zigikimifolaladega.pdf
    • https://cdn.shopify.com/s/files/1/0435/9333/4952/files/carbonium_ion.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/beckett_baseball_january_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/3482/1287/files/59205830406.pdf
    • https://cdn.shopify.com/s/files/1/0431/2091/8679/files/72075688781.pdf
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/pilijazek.pdf
    • https://cdn.shopify.com/s/files/1/0433/9315/5230/files/saurastra_samachar_bhavnagar_download_today.pdf
    • https://cdn.shopify.com/s/files/1/0431/3792/5269/files/89494048820.pdf
    • https://cdn.shopify.com/s/files/1/0434/9257/3334/files/88231354625.pdf
    • https://cdn.shopify.com/s/files/1/0432/8855/9780/files/gesaropubilepusitefo.pdf
    • https://cdn.shopify.com/s/files/1/0430/7278/2489/files/definition_of_poverty_alleviation.pdf
    • https://cdn.shopify.com/s/files/1/0434/3886/6584/files/300_crochet_stitches.pdf
    • https://cdn.shopify.com/s/files/1/0435/8651/9208/files/97398801431.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_off0000732b.bin
164bbcac8b9e3a07cafd6a686d0a49e9926cb5c04ac693f7525c34b56e025b8d
pdf-font-stream PDF embedded font (sfnt) at offset 0x732B 4908 bytes
font_01_sfnt_off000083fa.bin
cf3ceecc5d300ddc77218a335aedf2c11f207a636aa6a9a89e3ba840f4cef255
pdf-font-stream PDF embedded font (sfnt) at offset 0x83FA 10300 bytes