Malicious PDF — malware analysis report

Static analysis result for SHA-256 69a7b3319e9bfe8b…

MALICIOUS

PDF

48.0 KB Created: 2020-08-01 20:41:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 199e9058302e707bcba4f07aa83028c7 SHA-1: f2aa544fc44cff2f99543c2fc6dd80655b6f78d5 SHA-256: 69a7b3319e9bfe8b338d3f23bff30ff95a7fa9146c46d6c27da403e3e022a0fb
154 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to known malicious redirector infrastructure (ttraff.cc), indicating a potential phishing or malware distribution attempt. While no scripts were extracted, the presence of malicious redirectors and the sheer volume of links suggest an intent to lead users to harmful content.

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=sean+newcomb+fangraphs
    • http://files.vshtimbersptyltd.com/uploads/1/3/1/0/131070841/17f0bcb28c2.pdf
    • http://files.bigtrecreation.com/uploads/1/3/1/3/131379612/fasezojozixuf.pdf
    • http://files.transformingbunburyswaterfront.com/uploads/1/3/2/7/132741420/miwoxuf.pdf
    • http://files.mobileoilmens.com/uploads/1/3/1/4/131437886/bedabanarivig.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/1662/6082/files/tikulimuxixakujo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8316/0995/files/vaxonotam.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kefemomorevogik.pdf
    • https://cdn.shopify.com/s/files/1/0436/1791/0941/files/jogixofofotize.pdf
    • https://cdn.shopify.com/s/files/1/0430/4027/6642/files/zobefirizilerikijoda.pdf
    • https://cdn.shopify.com/s/files/1/0435/7432/9507/files/flo_rider_mail_on_sunday.pdf
    • https://cdn.shopify.com/s/files/1/0431/8697/8984/files/84602540363.pdf
    • https://cdn.shopify.com/s/files/1/0430/2507/2282/files/surovid.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/52244446143.pdf
    • https://cdn.shopify.com/s/files/1/0431/5214/6586/files/4242816692.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rinubigelezegir.pdf
    • https://cdn.shopify.com/s/files/1/0433/6992/2714/files/poworuxegog.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_off00007c29.bin
a677bc1351421eb0cca6db171b47ea811fc6bbc935e3d09b47f0edd05656fa1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C29 5732 bytes
font_01_sfnt_off00008f96.bin
5a5612fff031903291593d7d09dfc43e47e98ea2affe7effa94a98b3ec3590af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F96 10664 bytes

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