Malicious PDF — malware analysis report

Static analysis result for SHA-256 6eecce5fdf16e7ed…

MALICIOUS

PDF

41.4 KB Created: 2020-07-19 18:03:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62cb07d8ffe28fdc932dd9611aa70fe5 SHA-1: 962a61a4fc782131877906eec12d4ea2a54b76f1 SHA-256: 6eecce5fdf16e7ed81a01ae96cf3f38aee84abdd629d1d6724485aa2e3f8f504
154 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to link farms hosted on WordPress and other file-sharing services, indicating an attempt to distribute content or redirect users. One critical heuristic identified a link to known malicious redirector infrastructure, suggesting a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious.

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=latitude+and+longitude+map+worksheet+pdf
    • http://files.mpowertheworld.net/uploads/1/3/2/7/132740415/kadisetiwebuget_rofajanagojata.pdf
    • http://files.borobengals.com/uploads/1/3/1/0/131070173/dazozasejugufe-bupolinur.pdf
    • http://files.dbtfamilyskills.com/uploads/1/3/2/7/132712413/pidozamigitamude.pdf
    • http://files.showdownvapor.com/uploads/1/3/1/4/131437044/tulujijujer.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://xoleliv.files.wordpress.com/2020/07/80312977991.pdf
    • https://jixozab.files.wordpress.com/2020/06/mirerukawubesuv.pdf
    • https://filemukaxene293587401.files.wordpress.com/2020/07/kenalixuzekuranerosa.pdf
    • https://jukavazak949774331.files.wordpress.com/2020/06/pixufelitamavejigebadolem.pdf
    • https://semijex.files.wordpress.com/2020/07/52516924783.pdf
    • https://fugebetowipo.files.wordpress.com/2020/06/97248128591.pdf
    • https://lobetaxaj.files.wordpress.com/2020/06/xewipipav.pdf
    • https://vudilofifo.files.wordpress.com/2020/06/votafixozerita.pdf
    • https://cdn.shopify.com/s/files/1/0433/5281/7832/files/42398630012.pdf
    • https://cdn.shopify.com/s/files/1/0431/8212/9320/files/zudekiroruxofavagi.pdf
    • https://cdn.shopify.com/s/files/1/0427/7318/4678/files/kawuxexosebe.pdf
    • https://cdn.shopify.com/s/files/1/0431/3543/4901/files/zuxovubuz.pdf
    • https://cdn.shopify.com/s/files/1/0433/3263/2730/files/zogezujudisumomuzux.pdf
    • https://cdn.shopify.com/s/files/1/0433/5868/3294/files/xototoxoretubu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7627/9702/files/72018462601.pdf
    • https://cdn.shopify.com/s/files/1/0428/6945/7055/files/77454124414.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_off0000627c.bin
49d5bef11bda5b9c29387c4acadc4a95da2a0f228c8fad848cbc38e263d8f8e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x627C 5432 bytes
font_01_sfnt_off000074db.bin
4c3892c18ef92935eb116238605328f02182a9d00fde65b99427b1649550455d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74DB 10272 bytes

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