Malicious PDF — malware analysis report

Static analysis result for SHA-256 c56eca19ac6c88d2…

MALICIOUS

PDF

39.5 KB Created: 2020-07-31 13:45:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7aadad51213308114a96f4ecc6dbd66f SHA-1: 3c1d4d04c6c7fdb4e472ea4d074258f73bda234d SHA-256: c56eca19ac6c88d215317c4b70606515f065fa0fba640ec6717197880c153a2e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.ru). This suggests a link farm or SEO poisoning tactic to drive traffic to malicious infrastructure. The document body, though heavily obfuscated, contains keywords related to book downloads, reinforcing the lure. The presence of multiple embedded URLs and the critical redirector link strongly indicate a malicious intent to redirect users to potentially harmful content or phishing sites.

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=peter+drucker+managing+oneself+pdf+download In PDF document text
    • http://files.amandatsam.net/uploads/1/3/1/4/131409597/fexavulaxuvusu.pdfIn PDF document text
    • http://files.revolution-ent.com/uploads/1/3/0/9/130969489/webadolurajebex_laweduwupufuma_todimaze_dasoxalidinit.pdfIn PDF document text
    • http://files.eddingtonfirecompany.org/uploads/1/3/1/4/131453934/c6593545b1.pdfIn PDF document text
    • http://files.hopeforhispaniola.org/uploads/1/3/0/7/130775384/wozeminibanogojepuwi.pdfIn PDF document text
    • http://files.camppepper.com/uploads/1/3/2/3/132302913/1217584.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/1/0427/3537/0407/files/10144136870.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4021/1105/files/10878859711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3757/0710/files/54774143741.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1741554469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2390/8520/files/revumaxobujarex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/dudotazajozigifagofepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0565/4678/files/butasawowagisejut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2368/7067/files/7350615236.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7111/1330/files/74940861514.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0812/3303/files/gopurevemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7128/2079/files/43351288013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4953/2069/files/sakod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7889/3214/files/66874859827.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_off00005c43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C43 5512 bytes
SHA-256: ce4534b443368681ad77628b02a6e64d10151f81e044fe98e71468d59385e77c
font_01_sfnt_off00006ef8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF8 9792 bytes
SHA-256: 7aee0721065e1530582e7d425db9848772a01a167b089d5ee380cd716fac2579