Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eea8b6a399ef7a3…

MALICIOUS

PDF

46.0 KB Created: 2020-08-14 03:19:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94a98ccf8e22b71d4ff6a9be3792a03a SHA-1: 6e4523fbce04b15969622e1925f2d2f889bf255d SHA-256: 0eea8b6a399ef7a35cd6dff1e9c13a1e587a1401f47df6bd0c4800acc65aefd3
162 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=email+template+for+wedding+save+the+date'. Additionally, it features a large number of embedded links, many of which point to external PDFs, suggesting a link farm or redirection strategy. The presence of a 'download button' lure further supports a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=email+template+for+wedding+save+the+date
    • http://files.cognitionaginglab.com/uploads/1/3/2/3/132302999/7288255.pdf
    • http://files.god4ce.com/uploads/1/3/1/6/131637419/08aef60b8acee.pdf
    • http://files.srcchassis.com/uploads/1/3/0/7/130740053/tezasunadovibe.pdf
    • http://files.offlinecrypto.us/uploads/1/3/0/7/130739288/134095.pdf
    • http://files.hiddencovelodge.com/uploads/1/3/1/4/131438474/edf62d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/4121/6929/files/sutisidusajegovir.pdf
    • https://cdn.shopify.com/s/files/1/0431/2036/1629/files/rojabiginawa.pdf
    • https://cdn.shopify.com/s/files/1/0430/0816/3993/files/32556996311.pdf
    • https://cdn.shopify.com/s/files/1/0432/7351/9272/files/majufijona.pdf
    • https://cdn.shopify.com/s/files/1/0433/3866/2053/files/97372256702.pdf
    • https://cdn.shopify.com/s/files/1/0429/5370/3580/files/radive.pdf
    • https://cdn.shopify.com/s/files/1/0434/1520/8098/files/40829755778.pdf
    • https://cdn.shopify.com/s/files/1/0432/4750/1474/files/advanced_mathematics_solved_problems.pdf
    • https://cdn.shopify.com/s/files/1/0434/1684/6488/files/kovavomakavibewupo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1888/7073/files/bipegexej.pdf
    • https://cdn.shopify.com/s/files/1/0445/7873/4239/files/28648405432.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/telidafejaxilafez.pdf
    • https://cdn.shopify.com/s/files/1/0433/7192/1571/files/rujavimej.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_off00007429.bin
3a4a6e9ad1e4e97397f2da75366b5279ce01a7a7fb43baede957be29dbb0b611		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7429 5564 bytes
font_01_sfnt_off00008706.bin
e0308c4feae06a0d2be0b9446386bf722d3f35a111dd386ffa127267bad51a94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8706 10604 bytes

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