Malicious PDF — malware analysis report

Static analysis result for SHA-256 814ae66a37fa6d94…

MALICIOUS

PDF

62.7 KB Created: 2020-08-10 05:50:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d021be937389e2866888f8e60dae83ad SHA-1: c850c0e1a4c83b7c3ddb6bb98231627754c04a38 SHA-256: 814ae66a37fa6d946b5c578333f9648ce055d69f83a5c356db5cad8dfc3ceac8
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is designed to lead users to further malicious content. The document body itself is heavily obfuscated and contains numerous embedded URLs, many pointing to Shopify, suggesting a link farm or SEO poisoning attempt. The primary malicious intent appears to be redirecting users to the ttraff.ru domain.

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.ru/pify?keyword=sejarah+agama+yahudi+ustadz+abdul+somad+pdf
    • http://movab.bigwhitebarnyoga.com/uploads/1/3/1/4/131438641/ligegipunog.pdf
    • http://files.matchboxgreetings.com/uploads/1/3/1/1/131164159/9886550.pdf
    • http://files.monicasscarfs.com/uploads/1/3/1/6/131607054/zoziwadem.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/9748/9572/files/93746878839.pdf
    • https://cdn.shopify.com/s/files/1/0448/6030/9665/files/bridge_to_terabithia_whole_book.pdf
    • https://cdn.shopify.com/s/files/1/0428/6060/9692/files/79766778021.pdf
    • https://cdn.shopify.com/s/files/1/0435/1908/2655/files/dalenelivulenefozi.pdf
    • https://cdn.shopify.com/s/files/1/0429/7634/6266/files/zixavokevenejidafugefefa.pdf
    • https://cdn.shopify.com/s/files/1/0435/1423/2984/files/99897523294.pdf
    • https://cdn.shopify.com/s/files/1/0429/4089/1292/files/phn_mm_chuyn_dng_nh_sang_word.pdf
    • https://cdn.shopify.com/s/files/1/0441/2270/1976/files/fopulikolozijesovijepova.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/jojugazumejizeponenekoxo.pdf
    • https://cdn.shopify.com/s/files/1/0435/9720/1576/files/calisthenics_for_beginners_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/4660/8794/files/lavovewidawovawegu.pdf
    • https://cdn.shopify.com/s/files/1/0448/1892/3686/files/amalgamation_of_company.pdf
    • https://cdn.shopify.com/s/files/1/0428/3406/7615/files/pakijemaxebiwigaxufi.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0000b9b1.bin
99e21cb3a848e2bb0b22975aaf027bc0abdf68afa0048880ed0eddab99ac60be		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xB9B1 21456 bytes
font_00_sfnt_off00007635.bin
d9e23e910738874af6eca60738f218a199084ffc79b67601ba092f2cd13e58e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7635 5704 bytes
font_01_sfnt_off000089af.bin
30c0d961965dfce42c1adc8e14b28ecba1b12c32ca57fbef97b0a91ec2af6989		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89AF 16116 bytes
font_03_sfnt_off0000de5d.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE5D 4324 bytes

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