Malicious PDF — malware analysis report

Static analysis result for SHA-256 61180170109f4082…

MALICIOUS

PDF

55.9 KB Created: 2020-08-14 15:46:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9f214442e7651eee833fe6c895f3db19 SHA-1: f1a3a163a703bc6ceca9e6503a0ef19b1cf8e70b SHA-256: 61180170109f4082015231e6c0c0817fbc453d99aa4e4c48e72994680f91513d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm. One of the primary links, 'https://ttraff.com/pify?keyword=cgaffinetransform+rotate+around+center', is flagged as a malicious redirector. This indicates the document's purpose is to lure users into clicking these links, potentially leading them to malicious websites or further malware downloads.

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=cgaffinetransform+rotate+around+center
    • http://files.danielsonchiropractic.com/uploads/1/3/1/3/131379321/xolurona.pdf
    • http://kemuj.mjmediabox.com/uploads/1/3/1/0/131070420/4992526.pdf
    • http://files.makefieldcrossing.com/uploads/1/3/1/4/131437941/4944826.pdf
    • http://files.backcourtballers.com/uploads/1/3/1/3/131379320/dozoxijorizum.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/4575/6821/files/definition_and_scope_of_community_pharmacy.pdf
    • https://cdn.shopify.com/s/files/1/0428/9062/5191/files/vuvedonabog.pdf
    • https://cdn.shopify.com/s/files/1/0435/1967/2472/files/new_headway_beginner_3rd_edition_student_s_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/3066/7673/files/menuzusuvozopa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bujebunefevefosilipepeju.pdf
    • https://cdn.shopify.com/s/files/1/0435/1141/4943/files/22695500673.pdf
    • https://cdn.shopify.com/s/files/1/0445/8083/1396/files/pimufe.pdf
    • https://cdn.shopify.com/s/files/1/0430/7438/8119/files/jasef.pdf
    • https://cdn.shopify.com/s/files/1/0433/0638/5573/files/lead_lag_compensator.pdf
    • https://cdn.shopify.com/s/files/1/0435/4709/9290/files/injustice_gods_among_us_comic.pdf
    • https://cdn.shopify.com/s/files/1/0434/5744/6038/files/metabolismo_de_bases_nitrogenadas.pdf
    • https://cdn.shopify.com/s/files/1/0436/9698/0136/files/mergers_and_acquisitions_from_a_to_z_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/0316/6370/files/sogawegajimuxenukavufob.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007960.bin
54587788a39221e11d11c03c0a5e2b9f8136c689aa2b743b4a0c811814bfd2b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7960 5212 bytes
font_01_sfnt_off00008b02.bin
2f6fef1b49aafdb13ff163775aa34c33a7583979402303a575367f1930617bcd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B02 10696 bytes
font_02_sfnt_off0000af7e.bin
bb1e7b69a1727d502fa20c27594a44db64609b87a44ae202a20d3a9f6d018624		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF7E 16060 bytes
font_03_sfnt_off0000c417.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC417 4324 bytes

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