Malicious PDF — malware analysis report

Static analysis result for SHA-256 801aa79af917777b…

MALICIOUS

PDF

49.8 KB Created: 2020-08-26 09:05:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a96107f643ba2b492623bea3d668cdb5 SHA-1: b991c281f6b5f2f7a4774d55e47c19a215ad7488 SHA-256: 801aa79af917777b942528bb558e9ef87d2f3c7cdf06b6bba5aef1b94c16ef3d
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on 'cdn.shopify.com' and other domains. The ML classifier strongly indicates maliciousness. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a phishing page or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=num%25C3%25A9ro+de+la+carte+green+dot+moneypa
    • http://files.livingbyroad.com/uploads/1/3/1/4/131408056/6795148.pdf
    • http://files.syandash.co.uk/uploads/1/3/2/6/132681779/viwenajid.pdf
    • http://files.dksynthlab.com/uploads/1/3/0/7/130739265/3bda6ea5f.pdf
    • http://files.catherinewhitaker.com/uploads/1/3/2/7/132710627/zanotefug.pdf
    • http://files.lancemoshercreations.com/uploads/1/3/0/9/130970009/b015c.pdf
    • https://cdn.shopify.com/s/files/1/0438/4414/1218/files/ejercicios_rectas_y_parabolas_4_eso.pdf
    • https://cdn.shopify.com/s/files/1/0434/4299/5352/files/58907820056.pdf
    • https://cdn.shopify.com/s/files/1/0433/3446/7752/files/cayley_hamilton_theorem_example.pdf
    • https://cdn.shopify.com/s/files/1/0430/9945/5642/files/17967688814.pdf
    • https://cdn.shopify.com/s/files/1/0437/1746/0120/files/introduction_to_analytical_chemistry_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0440/5464/2853/files/ak_47_song_mp4_audio.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/letowopebofowebizuwir.pdf
    • https://cdn.shopify.com/s/files/1/0437/1077/5464/files/sigef.pdf
    • https://cdn.shopify.com/s/files/1/0430/7392/9378/files/tuvurumasofapojolipex.pdf
    • https://cdn.shopify.com/s/files/1/0432/4166/8775/files/speaking_the_truth_in_love.pdf
    • https://cdn.shopify.com/s/files/1/0432/4327/4395/files/53553060564.pdf
    • https://cdn.shopify.com/s/files/1/0434/5918/2745/files/tuwev.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_off00007c33.bin
f9352e5a405b9d2409a468b79cf0e5948dee044127da441fb6a70f3ec2670211
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C33 5428 bytes
font_01_sfnt_off00008e58.bin
fd3feb7e4affcdebf621ec5d8e337e74360bbad683587d338543182ac2ac693c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E58 13276 bytes