Malicious PDF — malware analysis report

Static analysis result for SHA-256 701ed27e08a89f5b…

MALICIOUS

PDF

49.1 KB Created: 2020-08-22 23:44:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9533d3000ade2999ff0112749aa82efa SHA-1: 70fe7d154d631b922470913c71ecc1de769ef70e SHA-256: 701ed27e08a89f5bbe54fc08ca74c9b1bce1a602ea67801a37490c8d7f831490
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, with one heuristic specifically identifying it as a malicious redirector link farm. While many linked PDFs are benign, the presence of a known malicious redirector suggests an attempt to obscure malicious destinations or engage in SEO manipulation. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=carole+and+tuesday+music
    • http://files.gilbertmath.com/uploads/1/3/1/3/131383657/luref_retipi.pdf
    • http://files.umbrellaproject.co.nz/uploads/1/3/0/7/130775588/e811e3.pdf
    • http://giredov.ladysweetcakes.com/uploads/1/3/1/3/131383483/vunokun_tovutife_meramotitiwe.pdf
    • http://files.artspeaks.net/uploads/1/3/0/7/130740242/fazafopavote.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/2724/2914/files/car_engine_parts_names.pdf
    • https://cdn.shopify.com/s/files/1/0439/3621/9291/files/52070420700.pdf
    • https://cdn.shopify.com/s/files/1/0429/2270/5055/files/89205886143.pdf
    • https://cdn.shopify.com/s/files/1/0431/7839/3749/files/90339586802.pdf
    • https://cdn.shopify.com/s/files/1/0432/5313/7576/files/vimifonefigijigif.pdf
    • https://cdn.shopify.com/s/files/1/0432/6332/8411/files/moxagukisejigedasajegov.pdf
    • https://cdn.shopify.com/s/files/1/0429/4026/8711/files/627892141.pdf
    • https://cdn.shopify.com/s/files/1/0452/4402/2944/files/arduino_uno_tutorial_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0434/0717/9941/files/76893758958.pdf
    • https://cdn.shopify.com/s/files/1/0428/8030/3270/files/apprendre__lire_l_heure.pdf
    • https://cdn.shopify.com/s/files/1/0430/5793/8581/files/xijomojepufobeto.pdf
    • https://cdn.shopify.com/s/files/1/0432/1030/9787/files/47583725478.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_off00007684.bin
c4c77de79185a6e32b969612b4158c72aca0a6965e648bc7cf893bc7a336abbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7684 2900 bytes
font_01_sfnt_off000080de.bin
a16f5700382fa896831b77b35ca7301f5ebc1f491a141decdc613397e1dcffe6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80DE 5092 bytes
font_02_sfnt_off00009217.bin
f0804a0ee238bce1540d4b6228b455fdb9419f682f35b8edc79b6d3cc69adf60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9217 11172 bytes

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