Malicious PDF — malware analysis report

Static analysis result for SHA-256 2132710e1b0bf0ec…

MALICIOUS

PDF

42.5 KB Created: 2020-09-02 01:32:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ec8769ac5853b0468845d47a529696be SHA-1: b059308d3325b3ebea4943766a4a6a0bb9c20389 SHA-256: 2132710e1b0bf0ec37d6d6c67781055763809b97dde8bc6fad0c0f27bfcf7138
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by a critical heuristic for containing links to known malicious redirector infrastructure. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many pointing to Shopify. The primary malicious URL identified is ttraff.com. No scripts were extracted, but the presence of the malicious redirector and the link farm structure strongly suggest a phishing or malware delivery attempt.

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=good+day+biscuit+images
    • https://cdn.shopify.com/s/files/1/0434/4145/5254/files/felipoz.pdf
    • https://cdn.shopify.com/s/files/1/0429/2896/3747/files/lepezetoroloboki.pdf
    • https://cdn.shopify.com/s/files/1/0433/1431/5422/files/autonics_mt4w-_dv-_4n_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/8344/0036/files/14369513028.pdf
    • https://cdn.shopify.com/s/files/1/0465/0585/3086/files/mapatukeweline.pdf
    • https://cdn.shopify.com/s/files/1/0436/9140/9562/files/nurudoza.pdf
    • https://cdn.shopify.com/s/files/1/0431/1308/7142/files/kedidufebotexami.pdf
    • https://cdn.shopify.com/s/files/1/0429/1775/7095/files/argumentative_essay_topics_for_college.pdf
    • https://cdn.shopify.com/s/files/1/0438/5076/0357/files/3713549868.pdf
    • https://cdn.shopify.com/s/files/1/0431/2684/9700/files/polyatomic_ions_worksheet_answer_key_pogil.pdf
    • https://static.usrfiles.com/ugd/c1108c_000d57b35bdb428385787afa014f1f98.pdf
    • https://static.usrfiles.com/ugd/b5472a_1419ce037f6847e682e91984cc722902.pdf
    • https://static.usrfiles.com/ugd/ef253e_bcc1d6d8dbb04c1d823052a66ff88ada.pdf
    • https://static.usrfiles.com/ugd/b8c837_9c881a4cdd3a48caac3f3699895b18b5.pdf
    • https://static.usrfiles.com/ugd/6cfc61_67b994e4e31b4e738c15637d6fefb737.pdf
    • https://static.usrfiles.com/ugd/1e4819_93b05e5df42447f384e4d9fb3cacca29.pdf
    • https://static.usrfiles.com/ugd/2f3ac6_fb9c6482eb5a4afaa65d1528154ff66c.pdf
    • https://static.usrfiles.com/ugd/1e32c2_f4bbd901888346dc81ad7ccd3509e4b3.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006874.bin
629c6fdf4b1fdfe566afa2e0d993566511d800555cf887815dec68fdbdad9e74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6874 5404 bytes
font_01_sfnt_off00007ad6.bin
2131f4a75b2f15581326d8a26301afe61805e030e80e74878f1b6045f69e9b56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD6 10060 bytes

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