Malicious PDF — malware analysis report

Static analysis result for SHA-256 187e9b42e3e5ebe9…

MALICIOUS

PDF

48.0 KB Created: 2020-08-16 18:54:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a8432a72be98cd17df42b4ed0762f005 SHA-1: 10e03306f386290fcdb4c7903406d8d6daa7951c SHA-256: 187e9b42e3e5ebe9f23f9082d5e3ce483807722fe61ace54a4d15b798feb759c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to potentially malicious redirectors or link farms. The primary malicious link identified is https://ttraff.cc/pify?keyword=package+mockup+design+template, which is flagged as a known malicious redirector. The document's content and structure suggest an attempt to drive traffic to external sites, likely for phishing or malware distribution.

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.cc/pify?keyword=package+mockup+design+template
    • http://powili.montgomerytattoos.com/uploads/1/3/0/9/130969742/xadevuv.pdf
    • http://lozoruna.openbookseries.com/uploads/1/3/0/8/130874429/xobezovofoja.pdf
    • http://files.leilaotoole.com/uploads/1/3/1/0/131071082/52f762a803.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/86209098811.pdf
    • https://cdn.shopify.com/s/files/1/0433/1978/7675/files/the_last_lecture.pdf
    • https://cdn.shopify.com/s/files/1/0433/9426/9333/files/64052239673.pdf
    • https://cdn.shopify.com/s/files/1/0435/3343/5029/files/assateague_island_surf_report.pdf
    • https://cdn.shopify.com/s/files/1/0433/0432/1184/files/pipobozigave.pdf
    • https://cdn.shopify.com/s/files/1/0437/7011/8306/files/types_of_architectural_drawings.pdf
    • https://cdn.shopify.com/s/files/1/0438/1389/6352/files/dementia_nice_guidelines.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_off00007f88.bin
fc216b347015301381be406d5237838df230e67d7fcfaa2d554269417f8863c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F88 5360 bytes
font_01_sfnt_off000091b0.bin
debc4bd28e97a8d2b4030083367cd0a2b313633372ad953816a24ba81189aa13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91B0 9920 bytes

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