Malicious PDF — malware analysis report

Static analysis result for SHA-256 e95f42b252ab04df…

MALICIOUS

PDF

45.1 KB Created: 2020-08-19 03:52:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f6d2020fcb73c8c38ef1f28f05b71031 SHA-1: ce3aea5b8a034afcd2d76ed542bec385eb23ad0d SHA-256: e95f42b252ab04df3ac63aad80e8d57dc8074e6af8685ec29f80ccd48b09c029
152 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.com/pify?keyword=share+certificate+template+doc', is identified as a malicious redirector. The document body also contains this URL, suggesting a social engineering lure to trick users into clicking it. The PDF also hosts a large number of other links, many pointing to Shopify, likely for SEO manipulation or to obscure the malicious redirector.

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=share+certificate+template+doc
    • http://files.lamochaboutique.com/uploads/1/3/0/7/130776594/21349fcccf205.pdf
    • http://nosumif.theselfdiscoverycenter.com/uploads/1/3/1/3/131383483/zipali.pdf
    • http://files.lollipopranch.net/uploads/1/3/1/4/131437822/tawuli.pdf
    • http://files.mcgarrymillermedia.com/uploads/1/3/1/8/131871569/2006440.pdf
    • https://cdn.shopify.com/s/files/1/0436/6788/2134/files/34799206078.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/dexawawiwimunoxifomapa.pdf
    • https://cdn.shopify.com/s/files/1/0432/7194/6398/files/juzuxugano.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/55778389613.pdf
    • https://cdn.shopify.com/s/files/1/0434/8837/9032/files/facebook_lite_latest_version_apk_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/8070/4405/files/poluvifijaroxawajezugine.pdf
    • https://cdn.shopify.com/s/files/1/0435/8687/9647/files/duleb.pdf
    • https://cdn.shopify.com/s/files/1/0438/5089/1424/files/19913495294.pdf
    • https://cdn.shopify.com/s/files/1/0428/9583/5295/files/34981846455.pdf
    • https://cdn.shopify.com/s/files/1/0437/8427/4081/files/28572508253.pdf
    • https://cdn.shopify.com/s/files/1/0433/8447/1710/files/kefewewabepobitamujapawun.pdf
    • https://cdn.shopify.com/s/files/1/0437/5393/0901/files/wijabupuguleg.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/26443777516.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_off000072b5.bin
27a5d9d8ecb4195694cbd8073d1497742dfdf4d8490330f80ed9bac2c0d395cd
pdf-font-stream PDF embedded font (sfnt) at offset 0x72B5 5320 bytes
font_01_sfnt_off000084a7.bin
2b60eaf0de2443d992e4dc56177f4218971c8511a74a675dc3e40f9a94579096
pdf-font-stream PDF embedded font (sfnt) at offset 0x84A7 10208 bytes