Malicious PDF — malware analysis report

Static analysis result for SHA-256 c76fb604b94cdb9f…

MALICIOUS

PDF

51.3 KB Created: 2020-07-15 18:23:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 68ea7fceae5b7f7085633cf72ad4b642 SHA-1: cc72a30ac6754696b4d589e993e03af59888250b SHA-256: c76fb604b94cdb9f164ca7c085d7c9d6cc539d1fc17f670f9ae5e5959637cd8a
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, which points to 'ttraff.ru'. This URL is presented to the user as a tutorial PDF, indicating a social engineering lure. The document also contains a large number of embedded links, many of which point to Shopify domains, suggesting a link farm or SEO manipulation tactic to distribute malicious content. No scripts were extracted from this sample.

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/wb?keyword=python%20tkinter%20complete%20tutorial%20pdf In PDF document text
    • http://files.1percentgallery.com/uploads/1/3/0/7/130774990/kekoruwo_ditafededudeki_pazulurezupesa.pdfIn PDF document text
    • http://files.eastlakecongregational.org/uploads/1/3/2/6/132695347/7e89d.pdfIn PDF document text
    • http://files.cprsd2.com/uploads/1/3/1/6/131607269/malamusofako_memavaxasasipeb_xaxojikilaloxo_bebugigod.pdfIn PDF document text
    • http://files.mimiarnstein.com/uploads/1/3/1/0/131070576/xokilexiwemes_doselewelu_sibupile_limuvori.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0106/9220/files/zifiperelef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6340/2905/files/pojazarudolexawewudaza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/63545483179.pdfIn PDF document text
    • https://wanamudiz.files.wordpress.com/2020/07/weluvesi.pdfIn PDF document text
    • https://warezofokel.files.wordpress.com/2020/06/82609683388.pdfIn PDF document text
    • https://wisiseju.files.wordpress.com/2020/07/zobigaxigit.pdfIn PDF document text
    • https://lugopago.files.wordpress.com/2020/06/64279609463.pdfIn PDF document text
    • https://kudikinojov.files.wordpress.com/2020/07/jozejevarirugogofupud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dobemajafapurotexujebo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4315/1272/files/xewexugufuzemorawotudapaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1570/8580/files/78870892937.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6772/8279/files/nexijinozotebazu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1915/8183/files/daxaliz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fixasitisajixumazurezeve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1792/0934/files/ripax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9142282406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/dijunom.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008ae9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE9 5268 bytes
SHA-256: b6d1161198a8aad48b115ec7723d11b5dced81517a27ad941b400dd1ebb5235a
font_01_sfnt_off00009ca1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CA1 10536 bytes
SHA-256: 057824ff035b1ca3cf5554d05a9b0304c16f653765cb544ebf84227e6d33d5e5