Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7f43accb618e6a8…

MALICIOUS

PDF

35.6 KB Created: 2020-08-11 19:31:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d82e8e922ee140c7162232f78b0e32a3 SHA-1: 74ee294b75e1d8b01f89949ecff087600c62e001 SHA-256: e7f43accb618e6a8a33eaace2f468cdabbd5bb99ac2e9e93fdf71979d8f780c5
152 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, forming a link farm designed to redirect users to malicious infrastructure. The primary redirector URL is https://ttraff.ru/pify?keyword=heart+of+worship+chords+g+pdf, which is flagged as malicious. While many other links point to Shopify, the presence of the malicious redirector and the sheer volume of links suggest a coordinated effort to drive traffic to harmful sites.

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.ru/pify?keyword=heart+of+worship+chords+g+pdf
    • http://guzolefaf.olddouneroadnursery.com/uploads/1/3/0/7/130738799/9e8c3068b9aa0.pdf
    • http://files.treatkidneyfailurewithherbs.com/uploads/1/3/0/8/130873708/39851ca66.pdf
    • http://files.parkforestmagnet.org/uploads/1/3/1/3/131379111/josexagoxa.pdf
    • http://files.ukhomesteading.co.uk/uploads/1/3/0/7/130776168/9261271.pdf
    • http://files.ninelivestwine.com/uploads/1/3/0/8/130874629/vezik_gunefitotokek.pdf
    • https://cdn.shopify.com/s/files/1/0433/8001/5262/files/zufefewubopelajakawose.pdf
    • https://cdn.shopify.com/s/files/1/0434/2372/7783/files/44547861163.pdf
    • https://cdn.shopify.com/s/files/1/0435/8324/2401/files/zejudi.pdf
    • https://cdn.shopify.com/s/files/1/0437/9167/9648/files/kate_upton_wallpaper.pdf
    • https://cdn.shopify.com/s/files/1/0435/1475/7288/files/42490101336.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dadimutixiwukigojubiw.pdf
    • https://cdn.shopify.com/s/files/1/0430/2045/1997/files/vipazomiwawis.pdf
    • https://cdn.shopify.com/s/files/1/0439/1727/9400/files/50163759428.pdf
    • https://cdn.shopify.com/s/files/1/0432/6146/0644/files/61816767987.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/janovi.pdf
    • https://cdn.shopify.com/s/files/1/0432/0706/5760/files/vejigantes_obra.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_off000046e7.bin
36cd8f40984fcbf3aabd2f2e31b75f8449868b5453cba98da388a6744120e659
pdf-font-stream PDF embedded font (sfnt) at offset 0x46E7 5440 bytes
font_01_sfnt_off00005975.bin
48337cdb1a99920ac5cb4e36fb4f4af55492e22dec882cb092d9e16225bc9527
pdf-font-stream PDF embedded font (sfnt) at offset 0x5975 12772 bytes