Malicious PDF — malware analysis report

Static analysis result for SHA-256 06515d46e435e3da…

MALICIOUS

PDF

44.9 KB Created: 2020-08-13 23:10:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d8c6371a610eb6be57a38a3c6d0b0555 SHA-1: f5d77d39cfc7c818c63f526afae7ec5c4b14f1b7 SHA-256: 06515d46e435e3dae08875d2ef305a06507fede054519d779f1b312b06d473b2
154 Risk Score

Malware Insights

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

The PDF document was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The embedded document body text, though partially garbled, contains a URL pointing to a known malicious redirector, suggesting an attempt to lure users to potentially harmful content. The presence of numerous external links, many pointing to benign Shopify domains but others to unknown domains, indicates a likely spam or phishing campaign.

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.ru/pify?keyword=autoheader+warning+missing+template+libproxy_hdr
    • http://files.dbssstingsoccer.com/uploads/1/3/0/8/130813645/wefokapikifelugajate.pdf
    • http://files.copeadvantage.com/uploads/1/3/1/4/131406841/9583115.pdf
    • http://zaximabe.brothersgreenhouses.com/uploads/1/3/2/6/132695675/kafesowubixatig-kizolerorarana.pdf
    • http://files.patriciacarriganartist.com/uploads/1/3/1/0/131069860/wemani-podow-repuwewab.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/6268/9946/files/the_breast_form_store.pdf
    • https://cdn.shopify.com/s/files/1/0432/2128/7067/files/cocubes_aptitude_questions.pdf
    • https://cdn.shopify.com/s/files/1/0437/6009/1287/files/58501977435.pdf
    • https://cdn.shopify.com/s/files/1/0429/7123/4467/files/38211311770.pdf
    • https://cdn.shopify.com/s/files/1/0431/4166/0826/files/sajijozogopisarije.pdf
    • https://cdn.shopify.com/s/files/1/0431/4939/4080/files/suzamewu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4391/2856/files/32222491683.pdf
    • https://cdn.shopify.com/s/files/1/0430/1016/2837/files/kupimamaluzifawi.pdf
    • https://cdn.shopify.com/s/files/1/0432/7515/7670/files/zejefofipoduxiwuzefetul.pdf
    • https://cdn.shopify.com/s/files/1/0430/0718/0954/files/43392024076.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060b9.bin
a268e4416f1cbd5b4ba857b6f0c83b22048164fdf50b2e8f7fbafb24e92a141f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60B9 3292 bytes
font_01_sfnt_off00006c8b.bin
8814ba241b15c11b19533ed2b6fbc4d7b4296a458cd1fe64c95439ceb5c0ad2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C8B 5796 bytes
font_02_sfnt_off00008039.bin
56527a2191775aa34211fd39efa8ca7abbfa7ec7926b862d787df7f65a287f8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8039 11080 bytes

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