Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cef79a4c293e314…

MALICIOUS

PDF

41.2 KB Created: 2020-08-21 05:11:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ffb4b99ccbeeba5719e4270928bd31c SHA-1: 7061f48459e017ce1232adb549f77035e04f62c8 SHA-256: 0cef79a4c293e3142c129b12899d1d642ed7b754e68326ba59b97d0b15684816
194 Risk Score

Malware Insights

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

The PDF document contains a lure for 'new movies 2019 free website' and embeds numerous links, many of which point to a link farm or redirect to malicious infrastructure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=new+movies+2019+free++website, which is flagged as a known malicious redirector. The document's structure and embedded links suggest an attempt to drive traffic to malicious sites, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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=new+movies+2019+free++website
    • http://saxewat.ocacolorrun.com/uploads/1/3/2/8/132814439/wivajopumu-dabikafelimore-bukufuzikami-goloxeno.pdf
    • http://files.whenwealllivedintheforestandnoonelivedanywhereelse.com/uploads/1/3/0/7/130739510/palotapof.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xutowoterefabobenovise.pdf
    • https://cdn.shopify.com/s/files/1/0434/1324/2005/files/96695429378.pdf
    • https://cdn.shopify.com/s/files/1/0438/5384/0534/files/zenivazutududadogebodet.pdf
    • https://cdn.shopify.com/s/files/1/0429/6910/4540/files/meratewopofidadiwa.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/82658683397.pdf
    • https://cdn.shopify.com/s/files/1/0429/1903/5033/files/animal_magnetism_osrs_quick_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/2177/0656/files/jirofijite.pdf
    • https://cdn.shopify.com/s/files/1/0449/7352/3112/files/beps_action_2_final_report.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/purple_ribbon_all_stars.pdf
    • https://cdn.shopify.com/s/files/1/0435/8209/5517/files/72757246459.pdf
    • https://cdn.shopify.com/s/files/1/0431/5450/5885/files/bajasugerur.pdf
    • https://cdn.shopify.com/s/files/1/0432/8108/8670/files/anemia_hemolitica_tratamiento.pdf
    • https://cdn.shopify.com/s/files/1/0427/6443/5612/files/zosaleserokijirere.pdf
    • https://cdn.shopify.com/s/files/1/0429/8611/1137/files/76178058845.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_off000063d7.bin
fb00f41940767485f84eca3a2ffa687514b29c75916a5579fb048cfb669bf094		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63D7 5412 bytes
font_01_sfnt_off00007649.bin
3b81cf07e0cde77afeca556596332f77640589640621070918a3bd4072b2be52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7649 9940 bytes

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