Malicious PDF — malware analysis report

Static analysis result for SHA-256 6750c45e3a88b483…

MALICIOUS

PDF

44.3 KB Created: 2020-08-01 04:52:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d9ddb4e3460df09c5c8dac7da3d1b536 SHA-1: 0f9e3fc931e3b144a20e027b4028257fa184930f SHA-256: 6750c45e3a88b48328af0245ad9d5087f783546c05cf2c1035ba90a9668cace1
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many pointing to Shopify-hosted PDF files, suggesting a link farm or SEO abuse tactic. One prominent link directs to a known malicious redirector infrastructure, indicating a phishing or malware distribution attempt. The document body contains obfuscated text and a URL that likely serves as a lure for users interested in a specific vehicle model.

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=2005+polaris+sportsman+700
    • http://files.platnymscloset.com/uploads/1/3/1/1/131164027/sotapibules.pdf
    • http://files.cottonginmuseum.org/uploads/1/3/0/7/130740165/xesuder.pdf
    • http://files.nancymorse.com/uploads/1/3/2/3/132303286/349308058dcca8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0432/0319/9138/files/wamofewamemokisoxavize.pdf
    • https://cdn.shopify.com/s/files/1/0434/3103/5032/files/89726532726.pdf
    • https://cdn.shopify.com/s/files/1/0429/8548/8543/files/gadininepefaluw.pdf
    • https://cdn.shopify.com/s/files/1/0435/7105/2707/files/tomemutovivexe.pdf
    • https://cdn.shopify.com/s/files/1/0434/4505/9749/files/jaxufafepavexari.pdf
    • https://cdn.shopify.com/s/files/1/0432/4671/5040/files/pofilufapijalab.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/bekoxosumuxukore.pdf
    • https://cdn.shopify.com/s/files/1/0434/4024/2840/files/49222529395.pdf
    • https://cdn.shopify.com/s/files/1/0431/7796/7778/files/solerorewij.pdf
    • https://cdn.shopify.com/s/files/1/0428/6965/3663/files/guts_short_story.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/38182608207.pdf
    • https://cdn.shopify.com/s/files/1/0430/5158/1597/files/lizanamibudoz.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000571e.bin
6bdcce09d94c9bc9f7a4b6a7e2bdd56e3511dfe00d4cd7232a25e386b4edc8c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x571E 5020 bytes
font_01_sfnt_off000067fb.bin
32e1f092c349db754b44b028479cd9aa794a5ae8431140f1fb45ea6a6da4211c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67FB 14652 bytes
font_02_sfnt_off00009618.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9618 4324 bytes

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