Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab48828535fd0ae9…

MALICIOUS

PDF

73.7 KB Created: 2020-08-04 04:57:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40df5d14259486a37fc8ae4c06b3e75b SHA-1: c8a7c5eb7f7d5aeb88dff23cf43d7d7a88920f04 SHA-256: ab48828535fd0ae9829521803cca09f21efab7f6a7b43c69f984e60203eb6611
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, with numerous embedded URLs. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=colosseum+history+pdf'. Another heuristic detected a large number of external PDF links, with the first identified as 'https://cdn.shopify.com/s/files/1/0432/8531/5737/files/kazesafowibek.pdf'. The document body contains garbled text but includes the URL 'https://ttraff.ru/pify?keyword=colosseum+history+pdf', suggesting a potential phishing or redirection attempt.

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.ru/pify?keyword=colosseum+history+pdf
    • http://beloseri.scubatom.com/uploads/1/3/2/6/132681501/fobasob-jefevowedadam-leweruxi.pdf
    • http://files.jamesmhatch.com/uploads/1/3/0/7/130738841/wesezodi.pdf
    • http://files.livinbygrace.com/uploads/1/3/2/6/132695416/8294321.pdf
    • https://cdn.shopify.com/s/files/1/0432/8531/5737/files/kazesafowibek.pdf
    • https://cdn.shopify.com/s/files/1/0428/0067/7031/files/lapumelujujujetupe.pdf
    • https://cdn.shopify.com/s/files/1/0427/9785/8972/files/62876715241.pdf
    • https://cdn.shopify.com/s/files/1/0432/2780/7911/files/50733458556.pdf
    • https://cdn.shopify.com/s/files/1/0431/0004/5469/files/dodozutures.pdf
    • https://cdn.shopify.com/s/files/1/0445/9102/2244/files/stardew_valley_salad.pdf
    • https://cdn.shopify.com/s/files/1/0433/4842/6910/files/kukonigabi.pdf
    • https://cdn.shopify.com/s/files/1/0437/4901/5701/files/rojobizadowimuputero.pdf
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/72927439150.pdf
    • https://cdn.shopify.com/s/files/1/0429/6844/9180/files/69390004079.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_off0000e2db.bin
896cf6fa7f37950cd0ef5a037141177caecf801ec3c2b40aa9c281504919babc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE2DB 5080 bytes
font_01_sfnt_off0000f3ff.bin
0b92752f408a87740260baf9f52d22c7496290bcca63095c7ff8e64e0715c40c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3FF 11132 bytes

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