Malicious PDF — malware analysis report

Static analysis result for SHA-256 60028aa36a437cf3…

MALICIOUS

PDF

42.6 KB Created: 2020-08-03 11:43:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a0b19dfc7ebe2e551a6e9a132907a0d1 SHA-1: 52387a8f0bfb2143a37ea49a0542f7ce0b3ec75d SHA-256: 60028aa36a437cf38255ac97d9352c3463eb6e86744af685e1f0abccd4babeb9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links and text referencing 'Fssai answer key pdf 2020', which is a common lure for phishing or malware distribution. The primary malicious indicator is a link to 'ttraff.com', identified as a malicious redirector. The document also contains a large number of links to PDF files hosted on Shopify, suggesting a link farm or SEO poisoning tactic to improve search engine visibility for malicious content. No scripts were extracted, but the presence of malicious redirectors and the lure indicate a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=fssai+answer+key+pdf+2020
    • http://files.sangerboysbasketball.com/uploads/1/3/1/6/131637308/savuf-puvafugopi-fododo.pdf
    • http://files.borderbowls.net/uploads/1/3/0/8/130814754/dawofukebuwofe.pdf
    • http://files.summersiartcrafts.com/uploads/1/3/1/3/131384432/ce3d46dff.pdf
    • http://files.communitycommitment.net/uploads/1/3/1/4/131410299/ridunujiganabod-fanobafu-fubejirofox.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/1802/6142/files/vovizezuvilalu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84574839703.pdf
    • https://cdn.shopify.com/s/files/1/0431/9540/0356/files/fexebimi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/xozufulokujoxulorurik.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lejozusuxawunulimedobina.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5476/files/58221831069.pdf
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/luxiteseretebanimusav.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/befaladosomesojajuxokef.pdf
    • https://cdn.shopify.com/s/files/1/0435/3599/0936/files/vuwabevedizufojoto.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/62654677968.pdf
    • https://cdn.shopify.com/s/files/1/0431/9969/2958/files/dubavutulosanaxud.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/29878061118.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068b5.bin
faa65789789faea881e41102d03e93eec4aeeaa712d460f429783a02c07f634a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68B5 5488 bytes
font_01_sfnt_off00007b91.bin
552dc8282a58c7bc8afe88884fee8bdaba7155ca5b80d69faeb5c8ea9cce6007		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B91 10072 bytes

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