Malicious PDF — malware analysis report

Static analysis result for SHA-256 1868e6a8b84fe675…

MALICIOUS

PDF

40.4 KB Created: 2020-08-25 09:18:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2b934103d7c465fa69c0b647ef326b2c SHA-1: 0ac32aca80d705ddb557268317c5b55b663d3493 SHA-256: 1868e6a8b84fe675a4cb3fdf45828d532c7ed6692cfa77bf6ff367e1c1d6df09
154 Risk Score

Malware Insights

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

This PDF document contains a mass of external links, masquerading as a free schedule template. One of the primary links, 'https://ttraff.cc/pify?keyword=free+2+week+look+ahead+schedule+template', is identified as a malicious redirector. The document's structure and the presence of numerous Shopify links suggest a link farm or SEO manipulation tactic to distribute malicious content. No scripts were extracted, but the embedded URLs are the primary threat.

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=free+2+week+look+ahead+schedule+template
    • http://ridifir.loveadelyn.com/uploads/1/3/0/9/130969525/5402300.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/1918/1985/files/55823395281.pdf
    • https://cdn.shopify.com/s/files/1/0434/0026/5878/files/31_days_to_improve_your_vocabulary.pdf
    • https://cdn.shopify.com/s/files/1/0431/7482/2044/files/waspy_g-_eazy.pdf
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/95554449269.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89186344985.pdf
    • https://cdn.shopify.com/s/files/1/0436/6041/1033/files/82832700722.pdf
    • https://cdn.shopify.com/s/files/1/0427/8976/5276/files/malubakozujovovuziw.pdf
    • https://cdn.shopify.com/s/files/1/0431/0253/5840/files/kakekebewuba.pdf
    • https://cdn.shopify.com/s/files/1/0432/1506/1153/files/punovukezirotug.pdf
    • https://cdn.shopify.com/s/files/1/0438/5079/3122/files/google_sheets_sumif_multiple_conditions.pdf
    • https://cdn.shopify.com/s/files/1/0433/6916/9045/files/57967007815.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_off00006021.bin
37575ae1b2ee3246fc53b6c83905bb1e993f4998e8ca56cf44a0855e1505dd47
pdf-font-stream PDF embedded font (sfnt) at offset 0x6021 5556 bytes
font_01_sfnt_off000072f3.bin
d09f2a0d4e0d0f1da23862106f2bb261e035cd051479f2e8e3d0ab24fdaae9fc
pdf-font-stream PDF embedded font (sfnt) at offset 0x72F3 9980 bytes