Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fac82cff8c3bac4…

MALICIOUS

PDF

37.1 KB Created: 2020-08-19 06:54:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ee6fe56c9d03672bd54acd72240cbed2 SHA-1: 8468e755deb3842709644166fbb5dc69afd69746 SHA-256: 9fac82cff8c3bac4c0236327a1f40d90712f3367ad709ed8d6cf9dac834e3965
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=accepted+2006+subtitles'. Additionally, it exhibits a PDF link farm behavior, with numerous links hosted on cdn.shopify.com and other domains, suggesting an attempt to distribute malicious content or engage in SEO manipulation for malicious purposes. The ML classifier also strongly flagged this PDF as malicious. The document body contains the suspicious URL and text that could be interpreted as a lure.

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=accepted+2006+subtitles
    • http://files.lincolnsmithmusic.com/uploads/1/3/1/8/131856121/mowesoj-zonisigepasekem-digetagemur-lojatidogowabas.pdf
    • http://files.marshamandel.com/uploads/1/3/1/3/131378942/tufovowewopituwavufi.pdf
    • https://cdn.shopify.com/s/files/1/0459/9562/2559/files/auto_spacebar_presser.pdf
    • https://cdn.shopify.com/s/files/1/0435/1475/7288/files/lowovolukudojakub.pdf
    • https://cdn.shopify.com/s/files/1/0435/2986/3320/files/temperatura_corporal_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0429/2821/0086/files/wizuxunuzefusuxetoxi.pdf
    • https://cdn.shopify.com/s/files/1/0430/3768/7962/files/96065580250.pdf
    • https://cdn.shopify.com/s/files/1/0433/5042/5750/files/black_lagoon_season_4.pdf
    • https://cdn.shopify.com/s/files/1/0432/0267/4845/files/84793064257.pdf
    • https://cdn.shopify.com/s/files/1/0430/3519/7602/files/23430564954.pdf
    • https://cdn.shopify.com/s/files/1/0433/9430/2117/files/the_sims_pet_stories.pdf
    • https://cdn.shopify.com/s/files/1/0432/9324/5600/files/articulos_cientificos_de_psicologia_clinica.pdf
    • https://cdn.shopify.com/s/files/1/0428/9229/6358/files/mixuma.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_off000046ac.bin
61d2b91640cef8981d331e2692677d48f7ff178bcad5214bbddcaabfb148cf2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x46AC 4984 bytes
font_01_sfnt_off000057a2.bin
37e77177adcfc0b7183c1d07c47a3fb79aa73b94401e41988288813fb64b9ddb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57A2 9988 bytes
font_02_sfnt_off000079f4.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79F4 4324 bytes

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