Malicious PDF — malware analysis report

Static analysis result for SHA-256 66e4885dace21096…

MALICIOUS

PDF

40.3 KB Created: 2020-08-14 14:32:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60e808236533805f9635a788d2f8c01e SHA-1: f08a784f786534c189927fade5f92026044b3a97 SHA-256: 66e4885dace210966a362780e67405645ecb10eac258f6a879026b123f35e6dc
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. The primary link, disguised as a search result, leads to a known malicious redirector. The document's structure and the presence of numerous external links suggest an attempt to manipulate search engine rankings or distribute malicious content through a link farm. No scripts were extracted, but the PDF's nature and the malicious redirector indicate a phishing or content distribution scheme.

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=animated+nursery+rhymes+free++videos
    • http://vafeke.tonyzale.org/uploads/1/3/1/6/131606490/derapenupo-vamuk-kudijofoxowumup.pdf
    • http://files.gingerandpicklesnutrition.co.uk/uploads/1/3/0/8/130874381/liximowigibep.pdf
    • http://files.angardencentre.co.nz/uploads/1/3/1/6/131637953/wizesarikikupo.pdf
    • http://files.ctiw.co.uk/uploads/1/3/1/6/131637218/9ec066350.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0440/6748/7894/files/ruzaketizunine.pdf
    • https://cdn.shopify.com/s/files/1/0434/6278/7237/files/43512924198.pdf
    • https://cdn.shopify.com/s/files/1/0431/2078/7613/files/vandana_shiva.pdf
    • https://cdn.shopify.com/s/files/1/0436/1145/5645/files/18627898753.pdf
    • https://cdn.shopify.com/s/files/1/0439/1682/0648/files/rosetta_stone_japan_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0436/1243/8685/files/serunizejovovesifisizim.pdf
    • https://cdn.shopify.com/s/files/1/0432/2902/0317/files/gerawilebupekeguz.pdf
    • https://cdn.shopify.com/s/files/1/0435/5365/2895/files/sanyo_dp_50747.pdf
    • https://cdn.shopify.com/s/files/1/0432/8285/8144/files/indesign_fillable.pdf
    • https://cdn.shopify.com/s/files/1/0430/5122/1146/files/xadenajopigoji.pdf
    • https://cdn.shopify.com/s/files/1/0432/5287/5432/files/bedudapaditabu.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_off0000603c.bin
570299b6bdf64557e3d8613742e330a4715222277546010592100e8f58cf274c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x603C 5264 bytes
font_01_sfnt_off000071fa.bin
e0bdb371c5b34176cbba8bbe034be24b34afd1303f7f7b6d44ba1ebb7c1085eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71FA 10128 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.