Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2b0d51079e9cab8…

MALICIOUS

PDF

51.5 KB Created: 2020-08-03 06:52:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 503ee428d05562b926011b7ea71eea0a SHA-1: fe3fa372c5d4d1d7f0e2fd00fcf303306e09f62c SHA-256: c2b0d51079e9cab8b8c57b83573b582c8fb99defa013b031def670d813b34451
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding numerous external links. One critical heuristic identified a link to a known malicious redirector, 'https://ttraff.cc/pify?keyword=asmodeus+core+1.+12.+2', suggesting a phishing or malware distribution attempt. The document body contains garbled text but also includes the same malicious URL and a list of Shopify-hosted PDF files, further supporting the link farm and redirection attack pattern. No scripts were extracted from this sample.

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=asmodeus+core+1.+12.+2
    • http://files.macierenae.com/uploads/1/3/1/1/131163693/7492667.pdf
    • http://files.travelingnurses1.com/uploads/1/3/1/4/131455463/xodizefuwuni_nidifur_tiwite_mukoxarebem.pdf
    • http://files.refrigerationengineersuk.com/uploads/1/3/0/7/130739746/44f7d3d0599be9c.pdf
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/xaduxonubonanomugagoverus.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/bowibomazejiwirowemajivi.pdf
    • https://cdn.shopify.com/s/files/1/0429/8607/8369/files/minuruwudumurot.pdf
    • https://cdn.shopify.com/s/files/1/0432/0365/7887/files/fumiwakapapogubiwukam.pdf
    • https://cdn.shopify.com/s/files/1/0431/2177/0657/files/wubavezamarasedalifazeveg.pdf
    • https://cdn.shopify.com/s/files/1/0431/8530/7805/files/bogomog.pdf
    • https://cdn.shopify.com/s/files/1/0430/5872/5018/files/tosuwipukeginidolejol.pdf
    • https://cdn.shopify.com/s/files/1/0433/1739/5611/files/bidosawulizos.pdf
    • https://cdn.shopify.com/s/files/1/0438/0744/1053/files/fedewukivom.pdf
    • https://cdn.shopify.com/s/files/1/0429/7372/4825/files/elite_dangerous_cobra_mk_iv.pdf
    • https://cdn.shopify.com/s/files/1/0435/9749/6488/files/sm._tsa._seasonal_decompose.pdf
    • https://cdn.shopify.com/s/files/1/0429/2175/4787/files/pijowejefepiroratotuk.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_off00007f51.bin
26b8befe52e76e0e4db27da95b3f1af78add266fd757a78938d463e232fbbc14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F51 5048 bytes
font_01_sfnt_off00009076.bin
f449eb96fc1c3f53b1f37277bed443df2cc54920dc7ca562cc742862b7f7e6c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9076 15892 bytes

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