Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9211f71a8772c1c…

MALICIOUS

PDF

42.6 KB Created: 2020-08-05 12:01:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c3997b0262a98bb21e3de7876a75ccf2 SHA-1: 7325c4548e2a9253d8cfff7a760634e503f1a452 SHA-256: a9211f71a8772c1c4b9082be273ef702e5959f41643e1e00dce3ad82e1fb905c
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.com). This suggests a link farm or SEO poisoning tactic designed to lure users to a malicious site. The document body, though heavily obfuscated, contains the malicious URL, reinforcing the attack pattern. No scripts were extracted from this sample.

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=city+of+endless+night+pdf
    • http://files.childrenandthechurchpublishing.com/uploads/1/3/0/8/130814669/foluka-fulovodibu-zamemenojesag-misuzupasod.pdf
    • http://files.britishstuntchampionship.com/uploads/1/3/0/7/130738993/bitixufatolakapifot.pdf
    • http://files.helsbellshandmade.com/uploads/1/3/0/7/130775828/buwanevotitetaz_zibawigiv_jimode_dogefofoma.pdf
    • http://paveges.graphicadprinting.com/uploads/1/3/1/4/131408738/8354347.pdf
    • http://files.soldonlakegeorge.com/uploads/1/3/0/8/130873876/dejakugenokite-senelumi-gapanote-niraxoku.pdf
    • https://cdn.shopify.com/s/files/1/0427/6020/8540/files/numpy_rotation_matrix.pdf
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/velavufapalulodeguxoj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mapitawaluzosamorexub.pdf
    • https://cdn.shopify.com/s/files/1/0439/5093/2123/files/wipazogajuvufape.pdf
    • https://cdn.shopify.com/s/files/1/0435/4303/6053/files/69968865118.pdf
    • https://cdn.shopify.com/s/files/1/0431/6980/8548/files/50547916563.pdf
    • https://cdn.shopify.com/s/files/1/0433/4842/6910/files/zofazolesibefuvukazila.pdf
    • https://cdn.shopify.com/s/files/1/0431/9988/9571/files/guxozaxadipujezani.pdf
    • https://cdn.shopify.com/s/files/1/0434/9588/2918/files/94134822704.pdf
    • https://cdn.shopify.com/s/files/1/0439/3664/5275/files/rolekifen.pdf
    • https://cdn.shopify.com/s/files/1/0437/5035/9194/files/geminelinatomugajesez.pdf
    • https://cdn.shopify.com/s/files/1/0435/7426/3963/files/1749339558.pdf
    • https://cdn.shopify.com/s/files/1/0436/1791/0946/files/nellyfurtado_all_good_things.pdf
    • https://cdn.shopify.com/s/files/1/0440/5254/5701/files/latin_king_manifesto.pdf
    • https://cdn.shopify.com/s/files/1/0432/5661/0979/files/74943671609.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_off00006952.bin
2da7fa4e577b1fd289fa360bda5cb2e426bc3bdccc804ec728ebf8c5ea41bc34
pdf-font-stream PDF embedded font (sfnt) at offset 0x6952 5004 bytes
font_01_sfnt_off00007a66.bin
7444e97a6d107a4ed1272e3f3408279adc6917dd7ff3cc7c0bafb1cb0ab119f1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A66 10148 bytes