Malicious PDF — malware analysis report

Static analysis result for SHA-256 00b0b31c2da933c0…

MALICIOUS

PDF

45.5 KB Created: 2020-08-27 22:06:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f22423ed2b38a67b983021e37001bd0 SHA-1: 007445925c6aea7e1ac1a4cc904ba5989f65cb38 SHA-256: 00b0b31c2da933c0270b5936a4c7c93894f3da3b74304d385c6595966884878e
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a link farm designed to distribute malicious content. One prominent link directs to 'ttraff.com', a known malicious redirector, which likely serves as the initial stage for delivering a payload. The document body, though obfuscated, contains text related to academic research, suggesting a social engineering pretext to entice users to click the malicious links.

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=what+do+you+see+as+the+strengths+and+weaknesses+of+ethnography+compared+with+survey+research
    • http://files.owenandmorganinvest.com/uploads/1/3/1/6/131637853/lakapisutoso-lobivujapobegi-pokabubatu-woxisif.pdf
    • http://files.thetlacademy.shop/uploads/1/3/1/3/131384789/dupive-madelubupazape-dezarekinoza.pdf
    • http://duroduval.beansplaybox.com/uploads/1/3/1/8/131871825/638dea185c24.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/7678/0192/files/31753544505.pdf
    • https://cdn.shopify.com/s/files/1/0435/9657/8979/files/maxinevuwenunavupi.pdf
    • https://cdn.shopify.com/s/files/1/0434/1514/2551/files/tasobugidudopovorar.pdf
    • https://cdn.shopify.com/s/files/1/0429/0645/2127/files/xekewiguromotoboxisaxe.pdf
    • https://cdn.shopify.com/s/files/1/0428/7922/1919/files/saints_row_2_cheatcc_ps3.pdf
    • https://cdn.shopify.com/s/files/1/0434/8156/3298/files/vivaldi_l_estate_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0431/6705/6028/files/dadunudutufevuzu.pdf
    • https://cdn.shopify.com/s/files/1/0433/1008/8342/files/sivusu.pdf
    • https://cdn.shopify.com/s/files/1/0428/1306/3327/files/blue_bird_naruto_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/8180/9558/files/diduruvoludixerozuxap.pdf
    • https://cdn.shopify.com/s/files/1/0436/0772/0094/files/vce_to_converter_app_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/3414/7989/files/92283242894.pdf
    • https://cdn.shopify.com/s/files/1/0433/8044/1238/files/bahaya_asap_rokok.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000071f0.bin
fcc682dd7f4cfc2527318c6d5ced5c50a13ff33652e6d32db3822bcc06d926b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71F0 5868 bytes
font_01_sfnt_off000085eb.bin
880d880d79298405e590a5051315f7363d81f05e308055790d569faece667355		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85EB 10048 bytes

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