Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a1efe7cdcf47569…

MALICIOUS

PDF

46.5 KB Created: 2020-08-14 15:00:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8eeed8739115aeec41da0ad1d5b35d0a SHA-1: 6259ec80a1479cf1ded365d37ada24e2e83527a7 SHA-256: 1a1efe7cdcf475694592f063f77627ee8119fd0f785bf7b3f0db2ab52457e17d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=netwrix+account+lockout+tool'. The document body, though heavily obfuscated, contains text fragments suggesting it is disguised as a 'Netwrix account lockout tool'. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, likely to improve search engine ranking for malicious content.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=netwrix+account+lockout+tool In PDF document text
    • http://wefafa.amsbandandchoir.com/uploads/1/3/1/4/131408999/xuvalujexalinupowomo.pdfIn PDF document text
    • http://files.heikecoffee.com/uploads/1/3/2/6/132695465/e03604557506.pdfIn PDF document text
    • http://files.katyschutte.co.uk/uploads/1/3/1/4/131452836/xupejujaloxomajegiva.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6089/5650/files/fofewavizelobelu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2461/2508/files/sap_accounting_software_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/pinivegumamogikoba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7927/7467/files/reilly_ace_of_spies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3729/4741/files/mevefegotanezoxawipep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4472/4133/files/17808218719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6542/6598/files/27150606360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0688/6051/files/19171220369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0593/3730/files/60005868063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9896/4117/files/rasupus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5339/1780/files/sigedejaxul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5381/6728/files/loxul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2753/6799/files/fijozinu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2973/3282/files/hemostasis_adalah.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2104/0792/files/lagikisojip.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A09 4692 bytes
SHA-256: 4fd7a7a9c8ddda575bccfd896d4fe095a9c14e86ff89b90b1de157e943062296
font_01_sfnt_off00007a15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A15 10652 bytes
SHA-256: 2cdea6af5844af07fb95e7b8e0a222c29f82c13f583eb664befea532af6c7170
font_02_sfnt_off00009e60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E60 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176