Malicious PDF — malware analysis report

Static analysis result for SHA-256 69053d095b87041d…

MALICIOUS

PDF

44.6 KB Created: 2020-08-23 21:17:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99c2e4321f3dfeebc479a1ebda340d04 SHA-1: 1fe21ed4d1963d8a643c1b393c9ecfc52ca4c8fa SHA-256: 69053d095b87041d5beb93985849467f673fb2a00f7320b0115063be922d6356
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.com'. This suggests the document is part of a link farm or SEO manipulation scheme designed to distribute malware or phish users. The ML classifier strongly supports the malicious verdict.

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=understanding+the+hero%2527+s+journey+archetype+answers
    • http://dawigo.justinedaisuke.com/uploads/1/3/2/6/132695780/2b81ae5d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/9436/8663/files/zojilo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7506/7297/files/battle_cats_mod_apk_2019_ios.pdf
    • https://cdn.shopify.com/s/files/1/0434/7707/4077/files/list_of_conjunctions_and_their_uses.pdf
    • https://cdn.shopify.com/s/files/1/0429/3191/2857/files/mikumimibu.pdf
    • https://cdn.shopify.com/s/files/1/0439/5565/0718/files/aldi_nord_angebote_prospekt.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/larabobed.pdf
    • https://cdn.shopify.com/s/files/1/0431/5018/0503/files/rilag.pdf
    • https://cdn.shopify.com/s/files/1/0431/1531/5349/files/luxasisubivesexe.pdf
    • https://cdn.shopify.com/s/files/1/0429/9148/5091/files/farm_animals_colouring_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/6536/0034/files/bodazogevadufovasepagalo.pdf
    • https://cdn.shopify.com/s/files/1/0429/3427/2159/files/matlab_wavelet_toolbox_user_guide.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_off000070eb.bin
d5cc4ba61fe8b559ff4298d926672bcfc3efe32c752b1969ac8995fd8e13a110
pdf-font-stream PDF embedded font (sfnt) at offset 0x70EB 5600 bytes
font_01_sfnt_off0000840e.bin
010329ccfe65a86a19f08474442b33564bc2de500b5f0addb0688a1f31ace98d
pdf-font-stream PDF embedded font (sfnt) at offset 0x840E 9848 bytes