Malicious PDF — malware analysis report

Static analysis result for SHA-256 956b60c750f5a026…

MALICIOUS

PDF

46.5 KB Created: 2020-08-19 02:45:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0614de4a5af7f4c33d4371777f534c04 SHA-1: b7fb6b28621174e55de9f1f18de0ef65fbce973e SHA-256: 956b60c750f5a026efa268a8547514ebcc0a0623c6b135e7999204633d1606fa
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with the primary link pointing to a known malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass external PDF link farm, suggesting an attempt to manipulate search engine results or distribute spam. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the document body and link structure indicate a lure designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=chambery+tourist+information+office
    • http://files.nalipops.com/uploads/1/3/1/4/131408899/tumumitukem.pdf
    • http://files.knuckleswhiterock.com/uploads/1/3/1/8/131856247/koteruzujidimu.pdf
    • http://files.mariannewardart.com/uploads/1/3/1/4/131453530/jovarerobigad-bowexil-sosevivodov-jalobo.pdf
    • http://jufunulep.aicphr.org/uploads/1/3/1/6/131606834/buwuxixugumumalo.pdf
    • https://cdn.shopify.com/s/files/1/0438/2500/4706/files/kannada_old_feeling_audio_songs.pdf
    • https://cdn.shopify.com/s/files/1/0428/8951/1071/files/89932399337.pdf
    • https://cdn.shopify.com/s/files/1/0429/7087/4009/files/human_eating_lady_persona_5.pdf
    • https://cdn.shopify.com/s/files/1/0427/6797/4556/files/rebowav.pdf
    • https://cdn.shopify.com/s/files/1/0431/4297/1553/files/48011967971.pdf
    • https://cdn.shopify.com/s/files/1/0431/2324/5216/files/kerogoduwazamasabuxiduwiv.pdf
    • https://cdn.shopify.com/s/files/1/0431/0741/8273/files/fuvivexojasatovoza.pdf
    • https://cdn.shopify.com/s/files/1/0429/5157/3657/files/mezujozako.pdf
    • https://cdn.shopify.com/s/files/1/0431/4071/0566/files/nijurapobamosinelawa.pdf
    • https://cdn.shopify.com/s/files/1/0435/9382/6463/files/zeviz.pdf
    • https://cdn.shopify.com/s/files/1/0437/2522/6152/files/barsaat_1995_song_ming.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_off00006aa7.bin
d3ef4093d128e2a82749c60584496a54cc2631070fcdcf5c8e0787ac1cd325a5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA7 5236 bytes
font_01_sfnt_off00007c5d.bin
e4a45a8f82a88f069714751d64925c626bc0777a21ffd5d5d7fc189f1521d8ef
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5D 10032 bytes
font_02_sfnt_off00009ec3.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x9EC3 4324 bytes