Malicious PDF — malware analysis report

Static analysis result for SHA-256 889bc2926d2ca791…

MALICIOUS

PDF

40.6 KB Created: 2020-08-14 13:56:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1ae7e914e52ce46698f40e5343fb55fc SHA-1: c629a48c053c6cde52285884668a22cf4d8f52aa SHA-256: 889bc2926d2ca791b55fa4cd89522c24472c4049732a9d11bb3b58f389e7439a
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links, 'https://ttraff.cc/pify?keyword=super+sport+3+tv+guide', is identified as a malicious redirector. The document body, though partially corrupted, suggests a lure related to a 'Super sport 3 tv guide', indicating a phishing or social engineering attempt to drive traffic to malicious infrastructure.

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=super+sport+3+tv+guide
    • http://files.davidlevitt.net/uploads/1/3/1/8/131856234/2144485.pdf
    • http://files.cmcpressurewashers.com/uploads/1/3/1/1/131163740/58e1f029f.pdf
    • http://files.alifeworthliving2.org/uploads/1/3/0/8/130874318/lenalaw-fowez-legojumafixixin-tunotababivofen.pdf
    • http://files.livefreeandfarm.com/uploads/1/3/1/4/131406544/2adfb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/1588/9305/files/tawuregulanusisujagaxo.pdf
    • https://cdn.shopify.com/s/files/1/0438/2323/5232/files/bufubogadajuwom.pdf
    • https://cdn.shopify.com/s/files/1/0427/4146/5244/files/mournings_end_part_1.pdf
    • https://cdn.shopify.com/s/files/1/0437/2103/1832/files/romafeka.pdf
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/familia_caricaceae.pdf
    • https://cdn.shopify.com/s/files/1/0440/4504/1814/files/bible_online.pdf
    • https://cdn.shopify.com/s/files/1/0431/3897/3857/files/career_wise_bursary_application_form_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/1157/9809/files/august_2020_calendar_kalnirnay_marathi_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0427/7692/0220/files/fukexagapejonuloxexo.pdf
    • https://cdn.shopify.com/s/files/1/0428/8030/3270/files/55915686742.pdf
    • https://cdn.shopify.com/s/files/1/0431/9094/3904/files/60228606330.pdf
    • https://cdn.shopify.com/s/files/1/0435/0964/5478/files/frozen_shoulder_stretching_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0434/7920/3992/files/pepuluxegajak.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_off000060fd.bin
d5fec069daa2ca3eea1614d6a342478f4c70b663a5b27bbc447291a3eb59170f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60FD 5212 bytes
font_01_sfnt_off000072ce.bin
3ce6fe026e15b47baaf986d0ef64a9ee36fb62bba20fda6e694d4cb873585fa4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72CE 10144 bytes

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