Malicious PDF — malware analysis report

Static analysis result for SHA-256 90abb81aa8418ad5…

MALICIOUS

PDF

59.7 KB Created: 2020-03-11 10:14:08 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 50680c336cd89eacd23fc5bdee3d0805 SHA-1: 51b4f2bc42af0177fd5480ba1cd639fe2ab84d98 SHA-256: 90abb81aa8418ad5c4dfb667b078230b661bb70276837e503c0681144a824ddb
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, a common tactic for SEO poisoning and phishing. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, with the dominant host being 'kohlpaintinganddrywall.com'. The embedded document body text, though partially corrupted, contains a URL that matches one of the extracted links, suggesting a deliberate attempt to redirect users. No scripts were extracted from this sample.

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://2psb9.slpny.com/uploads/1/3/0/5/130588261/130588261.html#nickel+affinity+chromatography+protein+purification
    • http://kohlpaintinganddrywall.com/uploads/1/3/0/5/130550937/defigurudazurej.pdf
    • http://elisabetepinto.pt/uploads/1/3/0/6/130639516/tewewikibufenon.pdf
    • http://www.bhpcd.org/uploads/1/3/0/8/130813398/6083672.pdf
    • http://financial-solutions.ca/uploads/1/3/0/2/130289002/fafepadegutujizerera.pdf
    • http://www.blueflamefootwear.com/uploads/1/3/0/7/130739559/ff19af1f.pdf
    • http://blackskyconsulting.net/uploads/1/3/0/4/130476541/rivorag.pdf
    • http://joy-fully.us/uploads/1/3/0/7/130775622/b2eb96518.pdf
    • http://splashsteamboat.org/uploads/1/3/0/4/130435726/guzisonunepom.pdf
    • http://anthonymcmaster.com/uploads/1/3/0/8/130874565/09288d0.pdf
    • http://informationsuperglacier.net/uploads/1/3/0/7/130775822/topunuxipitifi_jatolozidoxefaw_genotuv_nawufajinibevu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000acfa.bin
2785b0771749e3f01a4ddc40ea07fae596e1f16d84237d50a5eda9d1bb480edb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xACFA 8172 bytes
font_01_sfnt_off0000cc46.bin
b3affdfdfee497c2d3230853582529cf395d265bfdbb8cde7d84ae9c33602211		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC46 16036 bytes

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