Malicious PDF — malware analysis report

Static analysis result for SHA-256 0719a85503b79255…

MALICIOUS

PDF

47.1 KB Created: 2020-08-22 03:11:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d867e27528106bee3021a730195f543 SHA-1: 7abf9b9838686f3dbf2148185ebe1269fb11e6e1 SHA-256: 0719a85503b7925528d1ac7fc9f9b27e408e7b67c36c0e90d74576ad7d6ee189
154 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic identifying a redirector link to 'ttraff.com'. The document body, though heavily obfuscated, contains text referencing 'beach buggy blitz latest mod apk' and the malicious URL, suggesting a lure for users interested in game mods. The presence of numerous external PDF links, many pointing to Shopify, indicates a link farm strategy, likely to obscure the malicious redirector. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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=beach+buggy+blitz+latest+mod+apk
    • http://files.highwayssafetyhub.com/uploads/1/3/2/6/132696122/vifetuxatefivoxu.pdf
    • http://gipej.loyolasbhc.org/uploads/1/3/0/8/130814297/wunitapopekiwubilax.pdf
    • http://jazodoke.aelitasattic.com/uploads/1/3/2/6/132680835/nudevaz.pdf
    • http://dozunajek.kira-marie-mccullough.com/uploads/1/3/1/4/131453558/kilabo.pdf
    • http://lawef.nnis.net/uploads/1/3/1/3/131380181/jinefenapijewonuroda.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0434/6891/4838/files/33376002982.pdf
    • https://cdn.shopify.com/s/files/1/0432/3511/5175/files/fapij.pdf
    • https://cdn.shopify.com/s/files/1/0433/3273/1038/files/rorajidevijepubeb.pdf
    • https://cdn.shopify.com/s/files/1/0428/3842/5766/files/6_years_experience_resume_template.pdf
    • https://cdn.shopify.com/s/files/1/0429/9508/9559/files/rounding_in_python.pdf
    • https://cdn.shopify.com/s/files/1/0437/9174/5175/files/99073252914.pdf
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/48415137511.pdf
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/dimisinosu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6562/9082/files/driver_booster_6._4_key.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_off00006b57.bin
f386fc2e15a99647db94ec8083f4b99d7721602e712aec1f774337f42acf93ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B57 5572 bytes
font_01_sfnt_off00007e54.bin
d8446330d9bb2c3cd6630d0305fa1b5071594adaf355904ed4222cf0bc139f56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E54 10196 bytes
font_02_sfnt_off0000a152.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA152 4324 bytes

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