Malicious PDF — malware analysis report

Static analysis result for SHA-256 065131b7dffd334e…

MALICIOUS

PDF

41.4 KB Created: 2020-08-01 10:24:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f7c7d9360a26263a37e9255c1d570972 SHA-1: a1c7a71f270227e207d163a47c4b2ce630ae7e50 SHA-256: 065131b7dffd334e776f853e106007cfa0ce2a38e37696e70d68f09188a1942e
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, including a critical redirector link to 'ttraff.com', suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text related to a textbook and the malicious URL, indicating a lure. The presence of many external PDF links further supports the SEO poisoning or link farm tactic.

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=multinational+business+finance+14th+edition+pdf
    • http://files.spacetigertattoos.com/uploads/1/3/0/7/130739951/movojetinodot.pdf
    • http://files.canberraveterinarycrisisfund.com/uploads/1/3/0/7/130776483/bijiguvutu.pdf
    • http://files.creeksideband.com/uploads/1/3/1/4/131406149/konositavorulil.pdf
    • http://files.wicklow.coralleisure.ie/uploads/1/3/0/8/130874541/7906750.pdf
    • http://files.natureandcultures.net/uploads/1/3/0/9/130969448/lidopevudum.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/8852/7013/files/lakumiweruvovapip.pdf
    • https://cdn.shopify.com/s/files/1/0429/9587/5989/files/90073908902.pdf
    • https://cdn.shopify.com/s/files/1/0428/4186/6403/files/vavovibawalubipiriv.pdf
    • https://cdn.shopify.com/s/files/1/0437/8863/2213/files/69602281435.pdf
    • https://cdn.shopify.com/s/files/1/0434/4827/1000/files/56319738873.pdf
    • https://cdn.shopify.com/s/files/1/0429/3358/4028/files/dafoz.pdf
    • https://cdn.shopify.com/s/files/1/0431/1692/0996/files/52756652929.pdf
    • https://cdn.shopify.com/s/files/1/0432/5661/0976/files/xalevakefuroxotovedifox.pdf
    • https://cdn.shopify.com/s/files/1/0432/1896/0541/files/zolaguvobasedovido.pdf
    • https://cdn.shopify.com/s/files/1/0431/1996/8417/files/jopagudetalemot.pdf
    • https://cdn.shopify.com/s/files/1/0432/2312/2077/files/zunupotejufuregetajum.pdf
    • https://cdn.shopify.com/s/files/1/0428/4186/6403/files/84337182367.pdf
    • https://cdn.shopify.com/s/files/1/0431/6980/8535/files/71771527822.pdf
    • https://cdn.shopify.com/s/files/1/0441/4645/8776/files/71136822363.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_off000063c9.bin
df6a280cb5aac0e4ef4e72eb4f4cb5dce677a28d856160a92e7b46031c8edb6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63C9 5432 bytes
font_01_sfnt_off00007656.bin
5c591ee3a4394b4392317c6daceaf64aec4374a6f5be8559bf714e24a3632cc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7656 10012 bytes

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