Malicious PDF — malware analysis report

Static analysis result for SHA-256 a903fe123720a64b…

MALICIOUS

PDF

60.9 KB Created: 2020-03-23 06:42:09 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 2578daeafd07296883a7bca92841fa40 SHA-1: 63fe8e295650e366ed1f8b0994343c7f149c8a03 SHA-256: a903fe123720a64b9d95ae7729948f6a0943ecb121ef8c869c34df93a420916c
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to PDF files hosted on various domains. One such link is directly embedded in the document body, presented as a 'mobile bar business plan sample'. This suggests a social engineering tactic to entice users to click the link, likely leading to further malicious content or exploitation. The ML classifier strongly flagged this PDF as malicious.

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://directroofrestoration.com/uploads/1/3/1/0/131070733/131070733.html#mobile+bar+business+plan+sample
    • http://sanowahyudiphotography.com/uploads/1/3/0/7/130740562/ae4e348e52310f.pdf
    • http://peeinthesink.org/uploads/1/3/0/4/130476485/76b2b41643cc.pdf
    • http://midwaytacticalgear.com/uploads/1/3/0/4/130435544/9381526.pdf
    • http://ecosoccdiaspora.org/uploads/1/3/0/9/130969705/givorenerejewem.pdf
    • http://www.agriturismocramaccioli.com/uploads/1/3/0/4/130483239/310bd5308.pdf
    • http://aclarkphotography.com/uploads/1/3/0/3/130379060/gogebudunuvava.pdf
    • http://bgrand-apparel.com/uploads/1/3/0/9/130968985/natotovo.pdf
    • http://atomicfresh.com/uploads/1/3/0/4/130435937/9349296.pdf
    • http://mindyourbodyfitnessandnutrition.com/uploads/1/3/0/6/130621004/xovobim.pdf
    • http://rccustomdoorsandrails.com/uploads/1/3/0/8/130874269/dasuniwetidula-sirenume-mamajak-batefafaner.pdf
    • http://homegrownent.net/uploads/1/3/0/6/130620395/2333633.pdf
    • http://mpassociatesrealtors.com/uploads/1/3/0/6/130620244/wozutod.pdf
    • http://blackmakeupartistla.com/uploads/1/3/0/7/130740480/fiwefozujumowid-wowizaful-zolorun.pdf
    • http://feelwhatyoufeel.org/uploads/1/3/0/2/130270917/gimomupuviputuk.pdf
    • http://centerlinenj.com/uploads/1/3/0/5/130550663/8704113.pdf
    • http://101winecentral.com/uploads/1/3/0/6/130605028/a36c059023cefc.pdf
    • http://go-wbe.com/uploads/1/3/0/5/130540282/juxezosopuwak.pdf
    • http://belquiszahir.com/uploads/1/3/0/7/130775162/4a5da.pdf
    • http://caracarpenter.com/uploads/1/3/0/6/130640010/wetogamakaxeju-kabuvikaji-boxuxegafajadow.pdf
    • http://www.itoption.dk/uploads/1/3/0/7/130739663/bawubiratanefo-wunemi-namewet.pdf
    • http://glitznglamncgirl.com/uploads/1/3/0/7/130738631/b5b942e851.pdf
    • http://ohiofalconry.com/uploads/1/3/0/7/130739520/somive_bojib.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_off0000c612.bin
fd259a094e1f76894cd15a254f84223a1b3d57af0f99091d0c0781d2376e5401		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC612 8220 bytes

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