Malicious PDF — malware analysis report

Static analysis result for SHA-256 07e07296ace791da…

MALICIOUS

PDF

49.1 KB Created: 2020-08-06 05:36:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 13eb4440d8e0c00c3cc1202448e4ea82 SHA-1: e030e9e4823e2e964344037ffa97954800a573d3 SHA-256: 07e07296ace791dabab3f06436d2c9bd0f92a598ee76c593bebbf76bcc29399c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many of which are benign but likely serve to obscure the malicious one. The ML classifier also strongly flagged this PDF as malicious.

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=behaviorism+in+the+classroom+pdf
    • http://files.bdgtrainingconsultancy.co.uk/uploads/1/3/1/6/131606537/nupuv.pdf
    • http://files.blog.timferriss.com/uploads/1/3/1/4/131454521/e985f483789a.pdf
    • http://files.allisonvestaccompanist.com/uploads/1/3/2/7/132740296/4373050.pdf
    • http://files.grichardpotts.com/uploads/1/3/0/7/130739906/7273466.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/xezobuvuz.pdf
    • https://cdn.shopify.com/s/files/1/0429/6019/1651/files/fuvowenazinuwu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75609531209.pdf
    • https://cdn.shopify.com/s/files/1/0433/8280/0542/files/70230766292.pdf
    • https://cdn.shopify.com/s/files/1/0431/5080/3099/files/82360797555.pdf
    • https://cdn.shopify.com/s/files/1/0427/9664/6556/files/chapter_32_apush.pdf
    • https://cdn.shopify.com/s/files/1/0431/8792/9245/files/wasumupisakerosaxirarit.pdf
    • https://cdn.shopify.com/s/files/1/0431/7341/3032/files/refafuzigopo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6835/8807/files/bukizudomikizev.pdf
    • https://cdn.shopify.com/s/files/1/0428/6545/9366/files/49958873822.pdf
    • https://cdn.shopify.com/s/files/1/0428/6844/1254/files/tekoponixedalifafije.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_off00008111.bin
d7295fba9531f50b0a479081a42cdb51fe11acc00a0883fb849e01a294a7dd5c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8111 5504 bytes
font_01_sfnt_off000093a8.bin
65297c14ab7349bdfe4a3a066d76ed1ff78868ea58bda62981c7847e33bee364
pdf-font-stream PDF embedded font (sfnt) at offset 0x93A8 10492 bytes