Malicious PDF — malware analysis report

Static analysis result for SHA-256 60dea967a8803780…

MALICIOUS

PDF

35.1 KB Created: 2020-08-18 15:01:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ea5a6500d9a254465ef90b6a536ec95a SHA-1: a2c9904ee32fe30becc38cc6194f391b03ec5aad SHA-256: 60dea967a8803780e2866892ec8763f2ed0d20b4978665ddbb3099550c31e85e
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but also includes a critical link to a known malicious redirector at `https://ttraff.ru/pify?keyword=armageddon+piano+sheet+music`. This suggests the document is part of a link farm or SEO poisoning campaign designed to drive traffic to malicious infrastructure. 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.ru/pify?keyword=armageddon+piano+sheet+music
    • http://files.myprotectionguide.com/uploads/1/3/1/0/131070137/vuzakigutebuzowu.pdf
    • http://files.greenwichlight.org/uploads/1/3/2/6/132683334/7ac73b524ffd.pdf
    • http://fajeb.dksstudiogallery.com/uploads/1/3/2/6/132682646/ba92a.pdf
    • http://files.classicsenglishliterature.com/uploads/1/3/0/7/130738714/2935686.pdf
    • http://files.qmprecords.com/uploads/1/3/0/7/130776206/22c6f523aaa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/5970/8058/files/52267782648.pdf
    • https://cdn.shopify.com/s/files/1/0427/4687/1974/files/89598565750.pdf
    • https://cdn.shopify.com/s/files/1/0429/2768/5798/files/10161152615.pdf
    • https://cdn.shopify.com/s/files/1/0434/3103/5047/files/belajar_vlookup_dan_hlookup_excel_2020.pdf
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/72560673782.pdf
    • https://cdn.shopify.com/s/files/1/0434/6911/1448/files/tamil_songs_zip_file_2019.pdf
    • https://cdn.shopify.com/s/files/1/0429/9672/7957/files/dapawalofokolix.pdf
    • https://cdn.shopify.com/s/files/1/0437/7962/1026/files/haldia_petrochemicals_ltd_annual_report_2017.pdf
    • https://cdn.shopify.com/s/files/1/0438/4351/8614/files/84324382579.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tokon.pdf
    • https://cdn.shopify.com/s/files/1/0437/1133/2507/files/worogimemu.pdf
    • https://cdn.shopify.com/s/files/1/0438/6881/5528/files/empirical_review_of_literature.pdf
    • https://cdn.shopify.com/s/files/1/0434/5511/9513/files/panasowodowuwa.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_off00004a4c.bin
10caf5325d3e3269715f8fa3989454f6f4f8e900e308006903f18f8b9cc2d489		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A4C 5444 bytes
font_01_sfnt_off00005c98.bin
547048795c0dd260605f3eabe1db4464e42a1d26234832d33258bb23749f9749		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C98 10164 bytes

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