Malicious PDF — malware analysis report

Static analysis result for SHA-256 b60a52b1e4f94eb0…

MALICIOUS

PDF

37.0 KB Created: 2020-03-13 08:18:07 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8c37f7df07232c8ab3a1f8ca1883ebc8 SHA-1: ba308eb37d164fcf4e36cb2f00f62fcd9c2bec43 SHA-256: b60a52b1e4f94eb05362bad04d6cbf8f58054c0d7e44cfb65f598684b3794c2d
62 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 are hosted on similar domains and follow a numeric slug pattern, indicating a link farm or SEO abuse tactic. The document body, though partially corrupted, contains text related to combining JPEGs into a PDF and mentions the wkhtmltopdf tool, suggesting a lure to disguise the malicious nature of the embedded links. The primary heuristic identified a link farm with 28 external PDF links, strongly suggesting a malicious intent to redirect users to potentially harmful content.

Heuristics 3

  • 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
  • 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://colddiamnd.com/uploads/1/3/0/6/130621698/130621698.html#how+to+combine+multiple+jpegs+into+one+pdf+photoshop
    • http://kichesepies.com/uploads/1/3/0/7/130739852/3a7581f41.pdf
    • http://beyondshirts.shop/uploads/1/3/0/2/130273571/13c97cde7.pdf
    • http://fencingaberdeen.com/uploads/1/3/0/7/130739626/rozagov_jalino.pdf
    • http://official-resky.com/uploads/1/3/0/6/130620965/21d528cf5ac60.pdf
    • http://mackenzieemievents.com/uploads/1/3/0/4/130483710/029e6c378e.pdf
    • http://sss.bensirestaurants.com/uploads/1/3/0/5/130590117/tubefifujes_livugugagu_fupedemipe.pdf
    • http://ptsobingo.com/uploads/1/3/0/7/130740429/wesera-dubuven-lopumefex.pdf
    • http://alcohol-counseling.net/uploads/1/3/0/4/130476709/disonis-wivido-kopinawi.pdf
    • http://mail.obrienclan.org/uploads/1/3/0/2/130271195/suwepugami_tidutubulidi_kepol.pdf
    • http://www.naturalgratitude.com/uploads/1/3/0/4/130483193/zaganov.pdf
    • http://www.chinesebakery.co.uk/uploads/1/3/0/7/130740391/9e7936ee51f43c.pdf
    • http://immunoreceptor.com/uploads/1/3/0/4/130490314/8922247.pdf
    • http://adriantippetts.com/uploads/1/3/0/6/130620314/vediw-raxuxopenesuz-jexelix-silejazaruxoxol.pdf
    • http://teamell.com/uploads/1/3/0/7/130775205/romabifuwowekafigex.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_off00006735.bin
fa97ff8094439a59c1bd46699fa36fe3032de6770424fdaa1b54b689ecfd7d9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6735 8144 bytes

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