Malicious PDF — malware analysis report

Static analysis result for SHA-256 06aed287bdb94784…

MALICIOUS

PDF

42.3 KB Created: 2020-08-11 06:23:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b44eb09285d98bb8cb9f3cdad15e6f4 SHA-1: 289f377559511559d25229c5781b37f6bf1342ce SHA-256: 06aed287bdb94784116e9846b8651bb94097cb4157824efbcf5158b6f688b1fb
154 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical redirector link pointing to `https://ttraff.com/pify?keyword=bible+study+guide+for+beginners+pdf`. This suggests the document is designed to lead users to malicious content, likely a phishing page or malware download. The ML classifier also strongly indicated maliciousness.

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=bible+study+guide+for+beginners+pdf
    • http://xefada.ac-storyboards.com/uploads/1/3/0/7/130775795/672073.pdf
    • http://figemada.thunderheadstudios.com/uploads/1/3/1/4/131453870/wimebi-wixosexol.pdf
    • http://files.killjoy.info/uploads/1/3/2/8/132816158/444fa6d86d0810f.pdf
    • http://files.achespainssprains.com/uploads/1/3/1/3/131379828/zewudoxe_buvaza_putelimuzozesa_xasef.pdf
    • http://virofejug.centralcoastwineworks.com/uploads/1/3/2/6/132682883/jogesimofupop.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/8015/5290/files/gosusam.pdf
    • https://cdn.shopify.com/s/files/1/0433/9079/5934/files/10905549741.pdf
    • https://cdn.shopify.com/s/files/1/0432/1135/8372/files/craftsman_weedwacker_25cc.pdf
    • https://cdn.shopify.com/s/files/1/0434/7478/0312/files/basic_hazardous_waste_management.pdf
    • https://cdn.shopify.com/s/files/1/0428/9141/1615/files/19678764365.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/52325197595.pdf
    • https://cdn.shopify.com/s/files/1/0435/0715/5110/files/ginosogobixi.pdf
    • https://cdn.shopify.com/s/files/1/0428/2492/5347/files/88000143832.pdf
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/avisos_publicitarios.pdf
    • https://cdn.shopify.com/s/files/1/0430/0832/7829/files/backcross_dan_testcross.pdf
    • https://cdn.shopify.com/s/files/1/0431/3785/9741/files/carter_page_fisa_warrant.pdf
    • https://cdn.shopify.com/s/files/1/0437/2008/1563/files/bizagi_tutorial_portugues.pdf
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/42075763266.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_off00006786.bin
b1d55decd91309650bad14f3e6a7bf8e22ce29fba9732525e340ba19fae045fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6786 5288 bytes
font_01_sfnt_off00007992.bin
0cc23d08594fc6c4e8f7eee858ab84806c1c02ecc2ea6ee1ee3d25ca18d4f38a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7992 10216 bytes

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