Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d4f45928e63e4eb…

MALICIOUS

PDF

48.7 KB Created: 2020-08-03 08:59:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a707c7b64262cb5472576fc067f7897d SHA-1: e12a6fb0e2cdeeed6a3a31e72a91a1df6b0c463f SHA-256: 5d4f45928e63e4eb799473043ed351d12c17c5a280e0654372a148433b746c31
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector to 'ttraff.com'. This suggests the document's primary purpose is to lure users to malicious sites, likely for phishing or further malware delivery. The ML classifier strongly supports the malicious nature of this PDF.

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=thousand+years+of+love
    • http://files.jassiewassy.com/uploads/1/3/0/8/130873983/662622.pdf
    • http://files.paradigmshiftedu.com/uploads/1/3/0/8/130813483/ratobukezifilezipono.pdf
    • http://files.veneficaclothing.com/uploads/1/3/1/6/131637014/9917641.pdf
    • http://wedug.ashleyeglennon.com/uploads/1/3/0/8/130814788/3625938.pdf
    • http://files.wilesanimalsdragonspottery.com/uploads/1/3/1/3/131398246/7334618.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0433/9515/4070/files/weloloru.pdf
    • https://cdn.shopify.com/s/files/1/0437/2358/7736/files/loginatigaxofipanelu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2530/9604/files/kevamo.pdf
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/49256970535.pdf
    • https://cdn.shopify.com/s/files/1/0433/7316/6744/files/gujuranerowivefafirivuvi.pdf
    • https://cdn.shopify.com/s/files/1/0433/1945/9998/files/3d_printed_ar_lower.pdf
    • https://cdn.shopify.com/s/files/1/0428/9468/8419/files/bootstrap_image_classes.pdf
    • https://cdn.shopify.com/s/files/1/0428/7833/7187/files/98557740795.pdf
    • https://cdn.shopify.com/s/files/1/0435/7645/9422/files/fowifogopugekegomi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0876/1764/files/megit.pdf
    • https://cdn.shopify.com/s/files/1/0433/6995/5486/files/nivamuru.pdf
    • https://cdn.shopify.com/s/files/1/0433/3964/5093/files/53041121572.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tefabojukiva.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006795.bin
249120817a62692674a03fe6eaeef5d5527d2a8e73cea9ecf0c2d7e79810b552		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6795 3388 bytes
font_01_sfnt_off000073b9.bin
4d1039ee6ff1252b22b47b693fae1803d36b3cc83b3ee1af2a50cf6d8dc264b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73B9 4860 bytes
font_02_sfnt_off00008435.bin
fd67046a5c4f654ae7ed818d0585e9c5b88ffac4d12ea95263600f42142eb84a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8435 10388 bytes
font_03_sfnt_off0000a73e.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA73E 4324 bytes

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