Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ec327b3fbbb90dd…

MALICIOUS

PDF

54.3 KB Created: 2020-08-05 02:38:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 36fb5a426abf0e2b08e08ebf4b424583 SHA-1: 606f91f26553bbac05e76c5436b13747ee40c2b2 SHA-256: 7ec327b3fbbb90dd1fbf6cce14f81fe45c77eac658381172774bf8c3e4b84f80
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.cc). This indicates the file is designed to lure users into visiting potentially malicious websites. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted, and the document body is heavily obfuscated.

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.cc/pify?keyword=dna+astrology+books+pdf+in+tamil
    • http://files.anewimagesalonanddayspa.com/uploads/1/3/1/1/131164572/47fc1f448c4.pdf
    • http://xepujez.pointless-sisters.com/uploads/1/3/1/4/131438641/16d174b46.pdf
    • http://files.cyhmnslam.com/uploads/1/3/0/8/130814085/tunukogip-tukeli-doveni-gesum.pdf
    • http://files.dianneballanceportfolio.com/uploads/1/3/0/8/130873758/340fd6c.pdf
    • http://files.teacherdallas.com/uploads/1/3/2/6/132681954/woxiwedono.pdf
    • https://cdn.shopify.com/s/files/1/0448/4169/7441/files/product_manager_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/28471767803.pdf
    • https://cdn.shopify.com/s/files/1/0437/2961/7057/files/53563676101.pdf
    • https://cdn.shopify.com/s/files/1/0439/6944/6046/files/nivazadibodan.pdf
    • https://cdn.shopify.com/s/files/1/0430/8316/9943/files/dd_1149_fillable.pdf
    • https://cdn.shopify.com/s/files/1/0429/9004/3287/files/bigagurab.pdf
    • https://cdn.shopify.com/s/files/1/0433/2758/6472/files/bafanopomusibejuzeze.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/winoxilerudizixadejugo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nowivozepax.pdf
    • https://cdn.shopify.com/s/files/1/0432/7414/1864/files/84127135377.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/botolewapaniwid.pdf
    • https://cdn.shopify.com/s/files/1/0429/2627/6771/files/xikuzirurunejesojut.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000781c.bin
8b386dd4e19fd6af7f6cbca83eb97478110d09628c97d544e8bc40c12a62db43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x781C 5668 bytes
font_01_sfnt_off00008b58.bin
273801450a76491ed01b52e73359169bcf0f8db543bde2b6ab2432544eda89ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B58 11188 bytes
font_02_sfnt_off0000a91e.bin
c61eef594a1d01c2500c7ea7f018df2e626a103b2547556cdc3fcb8a7bf2a423		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA91E 10060 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.