Malicious PDF — malware analysis report

Static analysis result for SHA-256 742a3e4b855afa48…

MALICIOUS

PDF

87.0 KB Created: 2020-08-05 18:26:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b35c9f7bced9c2f7d9c4d82dda638d53 SHA-1: 2e414ae95e4c1557fd3490606915b2f9c08cb769 SHA-256: 742a3e4b855afa483c7fb6f57fa839ea27ac2909bfcdce1b2f4b78197c05b81e
154 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector infrastructure, specifically 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The presence of numerous other PDF links, many hosted on Shopify, indicates a potential link farm or SEO manipulation tactic to obscure the malicious destination. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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=mecanismo+de+a%25C3%25A7%25C3%25A3o+da+ceftriaxona+pdf
    • http://files.lionheart-graphics.com/uploads/1/3/1/4/131406491/tedobekizam.pdf
    • http://files.itswhereyoubelong.com/uploads/1/3/2/6/132695258/besowinufezelejo.pdf
    • http://files.theseaba.com/uploads/1/3/1/3/131383575/5147432.pdf
    • http://files.pofarmersmarket.com/uploads/1/3/0/7/130776887/pupaz.pdf
    • http://files.faithsphoto.com/uploads/1/3/1/1/131164488/savinuwizu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/78894021788.pdf
    • https://cdn.shopify.com/s/files/1/0429/1140/0102/files/pueblo_de_puerto_rico_orden_alfabetico.pdf
    • https://cdn.shopify.com/s/files/1/0430/6924/3549/files/14419762511.pdf
    • https://cdn.shopify.com/s/files/1/0432/2358/0830/files/wezadu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87967576867.pdf
    • https://cdn.shopify.com/s/files/1/0437/6713/6413/files/eu4_force_limit.pdf
    • https://cdn.shopify.com/s/files/1/0436/3298/4222/files/wubaja.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zonixalekena.pdf
    • https://cdn.shopify.com/s/files/1/0450/2405/1358/files/matplotlib_remove_frame.pdf
    • https://cdn.shopify.com/s/files/1/0433/9279/4774/files/15060419352.pdf
    • https://cdn.shopify.com/s/files/1/0431/3789/2509/files/18270618854.pdf
    • https://cdn.shopify.com/s/files/1/0431/0152/0023/files/wisuseredinona.pdf
    • https://cdn.shopify.com/s/files/1/0433/5874/8837/files/xafefaterero.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_off000111b6.bin
991695da6e59243ab3490b342fd2effcccadaeb372a0632e4995ec7ed3640c37		 pdf-font-stream PDF embedded font (sfnt) at offset 0x111B6 5840 bytes
font_01_sfnt_off000124b7.bin
54a64f48a761079e7604ace7faeddc718b33fbe510abdb531075e3d978569d3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x124B7 13416 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.