Malicious PDF — malware analysis report

Static analysis result for SHA-256 927f1918e849beb1…

MALICIOUS

PDF

48.3 KB Created: 2020-08-07 20:06:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ec354e2bc171ace9cb8a634dd25926f SHA-1: af13b84c7d95e19db3b7ed9ae8158b3493195b13 SHA-256: 927f1918e849beb15840c8d80aadbd1496635cd4230ab77b86459c40a876e374
150 Risk Score

Malware Insights

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

The PDF was flagged as malicious by a machine learning classifier and contains a large number of external links, many pointing to Shopify domains, suggesting a link farm. One of these links, 'https://ttraff.cc/pify?keyword=budget+preparation+format+pdf', is identified as a known malicious redirector. This indicates a likely attempt to direct users to malicious content or phishing sites.

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.cc/pify?keyword=budget+preparation+format+pdf
    • http://files.doleacademy.com/uploads/1/3/0/7/130740517/f8b2224b.pdf
    • http://files.fastelectricalrepair.com/uploads/1/3/1/3/131382955/wuzekagewa-kazedinomedob-nogabipiwowaj.pdf
    • http://files.temperateheatinguk.co.uk/uploads/1/3/2/6/132681836/9182676.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/20133015116.pdf
    • https://cdn.shopify.com/s/files/1/0427/6014/3014/files/vevaxebarozulevifemu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6504/8214/files/google_pacman_2_player.pdf
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/wodogipirite.pdf
    • https://cdn.shopify.com/s/files/1/0433/8820/7254/files/il_canzoniere_italiano.pdf
    • https://cdn.shopify.com/s/files/1/0432/3124/8539/files/99769675077.pdf
    • https://cdn.shopify.com/s/files/1/0430/9496/6421/files/fisosopesinejutefokela.pdf
    • https://cdn.shopify.com/s/files/1/0431/0115/9585/files/59505955216.pdf
    • https://cdn.shopify.com/s/files/1/0448/1007/6322/files/87060644981.pdf
    • https://cdn.shopify.com/s/files/1/0435/6653/0721/files/85588192524.pdf
    • https://cdn.shopify.com/s/files/1/0429/6992/3740/files/99130371694.pdf
    • https://cdn.shopify.com/s/files/1/0434/2025/4375/files/10078981900.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/6219719719.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_off00007e4a.bin
36804e7dfe47dd5bda25a1fb4304ae9d68c2072fe32a973916338bb09b02f966		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E4A 5200 bytes
font_01_sfnt_off00008fee.bin
9a9e267c70383a295e29b4edf754f3cb42a9699f6d878ec13ceedf8f32dd7380		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FEE 10752 bytes

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