Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f1ed0626b96aa6e…

MALICIOUS

PDF

48.3 KB Created: 2020-08-31 03:04:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c6d1f97c2bdb63812b38eae9732da46 SHA-1: 919799d4a6a555774d714962a6b1a0b45c49d893 SHA-256: 6f1ed0626b96aa6e48c20abfa6a6990b1748a4f15a17fd408fa8dd3b60d4962d
154 Risk Score

Malware Insights

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

This PDF file contains embedded links that point to a known malicious redirector infrastructure, specifically 'ttraff.com'. The document body, though heavily obfuscated, appears to reference 'Hydro gear service manual', suggesting a lure to trick users into clicking the malicious link. The presence of numerous external PDF links further indicates a link farm or SEO manipulation tactic.

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/wix?keyword=hydro+gear+service+manual
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/e2b09b_a5157047664549359b5ced29c46ca6c4.pdf
    • https://static.usrfiles.com/ugd/cc14e4_269b182683f3451a8dfa95f3b91aa005.pdf
    • https://static.usrfiles.com/ugd/0286dd_4bc45658ad0b4ca18b15f59b32285c66.pdf
    • https://cdn.shopify.com/s/files/1/0431/5791/3749/files/wonudelurukovij.pdf
    • https://cdn.shopify.com/s/files/1/0434/0737/6546/files/axum_obelisk.pdf
    • https://cdn.shopify.com/s/files/1/0428/9983/2995/files/city_of_fallen_angels_audiobook_mp3_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/0421/4942/files/sentencing_guidelines_traffic_offences.pdf
    • https://cdn.shopify.com/s/files/1/0430/5561/2058/files/bosch_avantixx_dishwasher_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/9798/1082/files/kuminurewubor.pdf
    • https://cdn.shopify.com/s/files/1/0429/4295/5687/files/10931415753.pdf
    • https://cdn.shopify.com/s/files/1/0433/1434/8197/files/lutimawukolux.pdf
    • https://cdn.shopify.com/s/files/1/0434/5724/9430/files/64594165851.pdf
    • https://cdn.shopify.com/s/files/1/0437/8486/3893/files/cat_battery_charger.pdf
    • https://static.usrfiles.com/ugd/b8c837_846036e69e6343b0b7201ca470aaed1e.pdf
    • https://static.usrfiles.com/ugd/3aca14_90fabbea9b7e4026a049abaea23c21db.pdf
    • https://static.usrfiles.com/ugd/b8c837_a4890c9367ed4286b258432db1866d38.pdf
    • https://static.usrfiles.com/ugd/9ea9b6_18a9a9a8e4304a0e9349c825a86e8e2b.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_off00008395.bin
9390325e04a1d9f75717126f2cf6b65704d34c40a2091a14c779934bd6f023d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8395 5384 bytes
font_01_sfnt_off000095d5.bin
8a032b96704db6fb3eb074f7c80018672e1481c300108da2309b854ea6b826fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95D5 8852 bytes

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