Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1447a584e392ea3…

MALICIOUS

PDF

36.5 KB Created: 2020-08-01 23:06:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cb14e7271e895b56c8c733d412766fe1 SHA-1: c22ec18cd8621192b9d77486f36af91bd37f6b38 SHA-256: d1447a584e392ea348428e1ebd66e367e6622e0dc3caf0026a5616e429d5a86b
152 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation or traffic redirection. One critical heuristic identified a link to a known malicious redirector (ttraff.cc), which is likely the primary malicious payload delivery mechanism. The document body, though heavily obfuscated, contains the text 'Hallelujah lyrics alexandra bruke' and the malicious redirector URL, reinforcing the lure.

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.cc/pify?keyword=hallelujah+lyrics+alexandra+bruke
    • http://files.greataytonlodge.co.uk/uploads/1/3/0/7/130775366/pelokizugatukap.pdf
    • http://files.rlesmedia.com/uploads/1/3/1/4/131438423/sifiwidaveraguno.pdf
    • http://files.martindewittfinearts.com/uploads/1/3/0/8/130814101/mobatu-fipila-pavimazatitul-vesinana.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tagitigupi.pdf
    • https://cdn.shopify.com/s/files/1/0434/2795/4853/files/fibovitojakimabuwejonu.pdf
    • https://cdn.shopify.com/s/files/1/0428/6241/1942/files/92827960794.pdf
    • https://cdn.shopify.com/s/files/1/0435/8370/1151/files/wolitexufisili.pdf
    • https://cdn.shopify.com/s/files/1/0430/7940/1632/files/76536617856.pdf
    • https://cdn.shopify.com/s/files/1/0433/8181/7494/files/html_unordered_list.pdf
    • https://cdn.shopify.com/s/files/1/0428/5405/6092/files/wifetesesebodiwiwabo.pdf
    • https://cdn.shopify.com/s/files/1/0430/2356/4957/files/70709255362.pdf
    • https://cdn.shopify.com/s/files/1/0428/1437/4054/files/wokurobabigaraxuxikep.pdf
    • https://cdn.shopify.com/s/files/1/0437/2883/0632/files/wegig.pdf
    • https://cdn.shopify.com/s/files/1/0430/9955/3959/files/fujopopibewitufel.pdf
    • https://cdn.shopify.com/s/files/1/0434/8110/4541/files/xefavaruxinodojeziwowe.pdf
    • https://cdn.shopify.com/s/files/1/0431/6574/5314/files/76868024577.pdf
    • https://cdn.shopify.com/s/files/1/0428/8747/9455/files/wadofi.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_off000051ec.bin
175297eac726e654fe169332a7e989744463183ed90ca616fcbb854eadfdb626		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51EC 5440 bytes
font_01_sfnt_off00006468.bin
53679daf17cb29caf9acf55e7db19b04d572b1abcd7fd842b4049d18d0a76805		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6468 9412 bytes

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