Malicious PDF — malware analysis report

Static analysis result for SHA-256 074f5342cda2d8bc…

MALICIOUS

PDF

39.7 KB Created: 2020-08-04 13:33:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b9d5992ea5f29a0494065204fe52f67 SHA-1: 1009c66adc415ca3aa08e44b2c854059875e1586 SHA-256: 074f5342cda2d8bce7bd05416722da1599a01f8aece01152484396d33db4326d
162 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector URL, indicating a phishing or scam attempt. The embedded text and heuristics suggest the document is designed to trick users into clicking the link, likely to download a secondary payload or lead them to a phishing site. No scripts were extracted, but the presence of multiple external links and a malicious redirector is a strong indicator of malicious intent.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=jadikan+file+pdf+jadi+satu
    • http://files.healdsburgartgalleries.com/uploads/1/3/0/8/130814960/gidabo.pdf
    • http://files.msvasquezclassroom.com/uploads/1/3/0/7/130738876/ec4602f40662.pdf
    • http://files.gwpskidszone.com/uploads/1/3/0/8/130814234/dukatoxufer_kilelevewax.pdf
    • http://files.robsradioactive.com/uploads/1/3/2/6/132682723/vanixunuwubono.pdf
    • http://files.orchesisdancesoc.ca/uploads/1/3/0/7/130740053/6591430.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/8034/1917/files/8806597840.pdf
    • https://cdn.shopify.com/s/files/1/0438/3267/2418/files/annual_report_nestle.pdf
    • https://cdn.shopify.com/s/files/1/0428/8937/9993/files/12225840676.pdf
    • https://cdn.shopify.com/s/files/1/0433/4059/5352/files/solimozudefivujirisi.pdf
    • https://cdn.shopify.com/s/files/1/0429/6382/8895/files/39536265076.pdf
    • https://cdn.shopify.com/s/files/1/0432/4163/5997/files/19471979414.pdf
    • https://cdn.shopify.com/s/files/1/0438/0341/0589/files/teori_ekosentrisme.pdf
    • https://cdn.shopify.com/s/files/1/0437/9816/7713/files/bella_jewel_tuebl.pdf
    • https://cdn.shopify.com/s/files/1/0432/7686/1606/files/61765544857.pdf
    • https://cdn.shopify.com/s/files/1/0430/8844/5604/files/lokudametexafi.pdf
    • https://cdn.shopify.com/s/files/1/0435/5280/0929/files/jquery_add_style.pdf
    • https://cdn.shopify.com/s/files/1/0435/6443/3569/files/mifejag.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_off00005eac.bin
176bf632439fdebb1ce72fde9e17d93e55a809da4b524af6647c4e2d306193b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EAC 5068 bytes
font_01_sfnt_off00007010.bin
b1c2902247252b1bae33cec484c120229ffe6e8b99a67eb580aaae66f095dd13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7010 9972 bytes

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