Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e1b37fcb008ebea…

MALICIOUS

PDF

47.1 KB Created: 2020-07-29 07:03:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61f7b09087fb79e9d4d81906439ac84b SHA-1: 06ea1d7f90adf11a8a677a76edaba8e6ae6739b1 SHA-256: 0e1b37fcb008ebea975df5ab6905bfdb802fb5551c2e85c486a870ed1ff3ec40
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is part of a link farm strategy. The document body, though heavily obfuscated, appears to contain metadata related to PDF generation and potentially keywords for SEO manipulation. The presence of numerous external PDF links, many hosted on Shopify, further supports the link farm attack pattern. No scripts were extracted, but the primary mechanism appears to be redirecting users to malicious infrastructure.

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=beldray+airgility+max+manual
    • http://files.laureltherapy.net/uploads/1/3/0/8/130813646/nozubipuxokekin_bimidatuwaguba_beregogudatuvos.pdf
    • http://files.beacondistributorsinc.com/uploads/1/3/1/4/131437474/bolamixorek_raduxozoxovi.pdf
    • http://files.oasisensembles.org/uploads/1/3/1/4/131483234/nagiguteveja-rozumuxazugi-baleririxep.pdf
    • http://files.geeklectica.com/uploads/1/3/1/4/131436956/lelabevut.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/1434/8197/files/95657888303.pdf
    • https://cdn.shopify.com/s/files/1/0432/1925/5454/files/21388715128.pdf
    • https://cdn.shopify.com/s/files/1/0440/9029/4437/files/masegowivajodibobuguniv.pdf
    • https://cdn.shopify.com/s/files/1/0432/8580/7269/files/sonavalibujozunufu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/nelexowi.pdf
    • https://cdn.shopify.com/s/files/1/0428/7715/7542/files/gidilugubonuz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/49181926903.pdf
    • https://cdn.shopify.com/s/files/1/0427/9681/0396/files/61680821750.pdf
    • https://cdn.shopify.com/s/files/1/0431/7780/3931/files/suwedulasedasa.pdf
    • https://cdn.shopify.com/s/files/1/0430/5059/8562/files/mufadefesuzukexesos.pdf
    • https://cdn.shopify.com/s/files/1/0430/8962/5250/files/85781225821.pdf
    • https://cdn.shopify.com/s/files/1/0428/6296/8991/files/wusikufigarogipulof.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15125842299.pdf
    • https://cdn.shopify.com/s/files/1/0434/8159/6066/files/koxokiporoxijivogafixu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4309/4677/files/29126507648.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_off000076d0.bin
0b801139c989322fb8364ed11f713a72aec47f2b4b975e979c6fba2c3dc55b26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76D0 4960 bytes
font_01_sfnt_off00008798.bin
a6d7fe53f427b9c75f7342ffb4740d20d6a900c2f594f158d870e44be2ddbd5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8798 11948 bytes

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