Malicious PDF — malware analysis report

Static analysis result for SHA-256 92fcc333d170a65b…

MALICIOUS

PDF

38.9 KB Created: 2020-04-18 07:52:20 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 155e1007c0a7dd26d988a682ace3f550 SHA-1: 11c4cfec847e65aeb1f58ef3fe2616aa9f9df342 SHA-256: 92fcc333d170a65b691f4952dd60da0750c1f49011410e3491d4110585015b68
96 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, indicating a link farm or redirection strategy. The ML classifier strongly identified this PDF as malicious. The presence of a "chloroform effect on eyes" in the document body, coupled with the extensive list of external links, suggests a deceptive lure to drive traffic to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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 http://greatluxurywatchesstore.com/uploads/1/3/1/0/131070894/131070894.html#chloroform+effect+on+eyes
    • http://rosavoice.com/uploads/1/3/0/2/130291478/ganabisekuxonesu.pdf
    • http://healingthroughartandmusic.com/uploads/1/3/0/6/130621916/2300700.pdf
    • http://hoskinscrosswords.com/uploads/1/3/0/6/130621510/7256988.pdf
    • http://minitoyhuskies.org/uploads/1/3/1/4/131437508/07fb8699943f1.pdf
    • http://arcgengenhariadeaplicacao.com/uploads/1/3/0/8/130814845/7696744.pdf
    • http://soulcoachlisa.com/uploads/1/3/1/3/131383698/3233584.pdf
    • http://elgallonegro.com/uploads/1/3/0/6/130604091/8642730.pdf
    • http://kksalescorporation.com/uploads/1/3/0/7/130738531/09e1d3.pdf
    • http://kelownahorseriding.com/uploads/1/3/0/8/130814393/nizeja.pdf
    • http://thecannacounselor.com/uploads/1/3/0/4/130477170/462820.pdf
    • http://roanokewomensmarch.org/uploads/1/3/1/0/131071297/2338481.pdf
    • http://carreraandrea.com/uploads/1/3/0/5/130589245/bezezoxuxus-vinepeked-womegotozuli.pdf
    • http://lioncontainers.com/uploads/1/3/1/3/131380308/rakumiz-pifoguxa-darikunur.pdf
    • http://mafyoo.com/uploads/1/3/0/5/130590719/wetunalomulelaxowob.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007117.bin
5a60bb3788de19d0b3153cdea898d33ae26509773d78b70aaf2c21f4e88bafc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7117 7924 bytes

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