Malicious PDF — malware analysis report

Static analysis result for SHA-256 08fd4d3976fe065e…

MALICIOUS

PDF

76.8 KB Created: 2020-08-03 08:05:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1076b4405ef42693ed6247115eaaf2ef SHA-1: 793dc8377b31f42678ef0dd52aa3d579ac7452fc SHA-256: 08fd4d3976fe065e9e403d358202dc53f80a8f35ffcdefd26cd0feff3238600d
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying a link to known malicious redirector infrastructure at `https://ttraff.com/pify?keyword=2ez+table+2016`. Another heuristic indicates a large number of external PDF links, suggesting a link farm or distribution network. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest an attempt to redirect users to malicious content, likely for phishing or malware delivery.

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=2ez+table+2016
    • http://files.cmspso.com/uploads/1/3/1/1/131164117/litadalowaxenut-sebajabobo-bukomixaj.pdf
    • http://files.livingvitra.com/uploads/1/3/0/8/130873851/rusuleje-xovuji-sudujefasaw-desizuguleg.pdf
    • http://files.key2evolve.com/uploads/1/3/0/8/130874318/zasabuxemer_xawapikiguromik_balasoge.pdf
    • http://files.emanuelacooper.net/uploads/1/3/1/8/131856333/dokajexuxeveris.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/3241/1298/files/tovepopulodenu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6607/2994/files/57251918435.pdf
    • https://cdn.shopify.com/s/files/1/0437/8319/2727/files/pavajizobamadib.pdf
    • https://cdn.shopify.com/s/files/1/0435/1708/3803/files/16806327372.pdf
    • https://cdn.shopify.com/s/files/1/0430/8523/4338/files/titesivigipisinozogeza.pdf
    • https://cdn.shopify.com/s/files/1/0432/9163/9966/files/folevejozogifujo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0881/9349/files/dureseguxolujuxodid.pdf
    • https://cdn.shopify.com/s/files/1/0435/2576/7327/files/tebapatam.pdf
    • https://cdn.shopify.com/s/files/1/0435/2563/6248/files/40498901325.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/79209147909.pdf
    • https://cdn.shopify.com/s/files/1/0431/2665/3079/files/xufapivuwudupik.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_off0000f383.bin
90f4cec5b839344762ae8b4f813b864d1c478acb38a4358946f3931d6bcab26a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF383 4980 bytes
font_01_sfnt_off0001048c.bin
b916e27d743d8ac40054e4c1ed0e30c850ee65723850aef4c47e43f27676e8be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1048C 9860 bytes

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