Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7247e8076f1d844…

MALICIOUS

PDF

44.1 KB Created: 2020-08-14 04:06:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a2058ed0c76add3ae53d0a56320e9ad0 SHA-1: 7dfa5e23b24d53a1474b3e8d7682afa1d4996b5c SHA-256: c7247e8076f1d8449360832e54a1a76fe9b87fcfb930853a0ffac367227d1c97
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, with one identified as a malicious redirector. The presence of numerous links, many pointing to Shopify domains, suggests a link farm or SEO manipulation tactic. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the document body and heuristics point to a malicious redirection or phishing attempt.

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.ru/pify?keyword=chaos+monkey+tool
    • http://files.queenofangelsspred.org/uploads/1/3/1/4/131437862/pidinano.pdf
    • http://files.surelockedin.com/uploads/1/3/0/8/130814208/pokujimisobelol.pdf
    • http://mobokipi.samanthadelgarno.com/uploads/1/3/2/8/132814930/xadilefovixonodeba.pdf
    • http://gufawuz.aliveaccelerator.com/uploads/1/3/1/4/131437363/kugagapox_jefumorarez_tikadu.pdf
    • http://files.veganfolkestone.co.uk/uploads/1/3/0/8/130814351/lumilikoditifadorame.pdf
    • https://cdn.shopify.com/s/files/1/0448/1197/6855/files/abound_with_blessings.pdf
    • https://cdn.shopify.com/s/files/1/0432/0896/6301/files/the_apology_of_socrates.pdf
    • https://cdn.shopify.com/s/files/1/0436/0398/4547/files/52471121998.pdf
    • https://cdn.shopify.com/s/files/1/0437/0553/2569/files/52683558467.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/jakutonawunifomojine.pdf
    • https://cdn.shopify.com/s/files/1/0433/5733/9813/files/google_translate_arabic_to_english_file.pdf
    • https://cdn.shopify.com/s/files/1/0432/6667/0745/files/english_to_japanese_words.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6849/files/mijakumasodagigarozuxo.pdf
    • https://cdn.shopify.com/s/files/1/0451/2360/0538/files/catalogo_cores_suvinil.pdf
    • https://cdn.shopify.com/s/files/1/0438/4486/2114/files/46443104250.pdf
    • https://cdn.shopify.com/s/files/1/0437/1228/2789/files/69287070246.pdf
    • https://cdn.shopify.com/s/files/1/0431/6931/7020/files/blank_outline_map_of_europe.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_off00006fac.bin
0a94c5c3737ca8c0e6e2b4a942e5d930f49e3e76f694085e68369909bbfe57bc
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FAC 4900 bytes
font_01_sfnt_off00008037.bin
118c0bc297b8a651413116f79244a706b1d490acb3981ffffbfc63f6f4fae323
pdf-font-stream PDF embedded font (sfnt) at offset 0x8037 10376 bytes