Malicious PDF — malware analysis report

Static analysis result for SHA-256 c44c9ba401c1c0c4…

MALICIOUS

PDF

39.3 KB Created: 2020-06-07 20:15:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44e7f1da1ae45066fc4687ff1a78a273 SHA-1: 09f256027092198da91604444e97e3695a5dd3f5 SHA-256: c44c9ba401c1c0c4d83edcf292100e8da1141676b91f61ac6b6d122498962372
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, identified as a link farm, designed to redirect users to external sites. One critical heuristic flagged a link to known malicious redirector infrastructure. The document body, though partially corrupted, contains URLs that are part of this link farm, suggesting the primary intent is to drive traffic to potentially malicious destinations.

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/wp3?keyword=mechanical+advantage+worksheets#mechanical+advantage+worksheets
    • http://iamkynggran.com/uploads/1/3/0/6/130604448/komemes_wojufufo.pdf
    • http://restingvessels.com/uploads/1/3/0/3/130379818/dixeradiw.pdf
    • http://beyondbookkeeping.us/uploads/1/3/0/6/130621392/penurujili-sofegani.pdf
    • http://mylocstudio.com/uploads/1/3/2/3/132303082/mulipegobozune.pdf
    • http://gtcwomen.com/uploads/1/3/1/6/131637517/3dd49d25e177d.pdf
    • http://haieryule.chinasummercamp.org/uploads/1/3/0/7/130776536/mopupafipexeka_furofetiso_tazuguto_janazojuguwufol.pdf
    • http://wincliffproperties.com/uploads/1/3/0/7/130738755/wutigegibakugep_pusol_baxarivigupek.pdf
    • http://asdlearningsite.com/uploads/1/3/0/6/130621165/dd087a3db62add.pdf
    • http://customartpresentation.com/uploads/1/3/1/0/131070527/d20c2b.pdf
    • http://mta84.qualitynow.net/uploads/1/3/0/4/130476917/danirunu.pdf
    • https://kikibok.files.wordpress.com/2020/06/42564954932.pdf
    • https://zuletidi547353679.files.wordpress.com/2020/06/59596971372.pdf
    • https://dezekifas.files.wordpress.com/2020/06/96716886988.pdf
    • https://xomajulagaf.files.wordpress.com/2020/06/vodaxoxekara.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_off0000511b.bin
78c4a40cddaa7d7facff7ed066f14c449a3f1b9bed66718d630de15a548fb75a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x511B 6964 bytes
font_01_sfnt_off000062c3.bin
90cbffdb1405eea01d9b1ec7309a58f7ca94532e3fa3907236ba1e1e4da39447		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62C3 2460 bytes
font_02_sfnt_off00006dc9.bin
b9a338cc49b51537b7e7e56980f31f5f02d83ac9a697010ca099b0c6979e4a87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC9 10352 bytes

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