Malicious PDF — malware analysis report

Static analysis result for SHA-256 013e3b72ecab450f…

MALICIOUS

PDF

41.8 KB Created: 2020-08-21 03:59:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4b249a60bbeaad6f42802cff589173bc SHA-1: 3d4374f38cc25168fe13cfc5a72f4797516af961 SHA-256: 013e3b72ecab450fedbd8db5494b6b20d7ee5b2edaead8a80b1c04f926e0dcd1
194 Risk Score

Malware Insights

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

This PDF document contains a lure related to "Immune system test answers" and embeds numerous links. One primary link, 'https://ttraff.ru/pify?keyword=immune+system+test+answers', is identified as a malicious redirector. The document's structure and embedded links suggest it is part of a link farm or phishing campaign designed to redirect users to malicious sites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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=immune+system+test+answers In PDF document text
    • http://bosigutip.thehillchristianfellowship.com/uploads/1/3/2/7/132712050/09718f1d.pdfIn PDF document text
    • http://zidox.voyagescimatur.com/uploads/1/3/1/3/131398020/tejolopurikix.pdfIn PDF document text
    • http://samizex.nealybirthandlactation.com/uploads/1/3/2/8/132814930/9211092.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/1/0435/5109/6981/files/85213001257.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zugazad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5404/7137/files/libomulexavexigaxudetej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8510/2237/files/marcelle_bouteiller.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0900/4952/files/wovapixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5735/6710/files/movukurapedaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/1944/0028/files/54757442737.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1812/5465/files/af_form_931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/injustice_gods_among_us_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8617/6675/files/determining_spinner_probability_worksheet_answers.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

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006891.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6891 4932 bytes
SHA-256: 8be2e08d31598f05a876d381e46e1781860eea1cbd8471e0d2efbbc0138a4169
font_01_sfnt_off00007949.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7949 9816 bytes
SHA-256: cc3296b946c4ea318971eeae3cdbc9842f8996e8b3f0368bc6b86c3fe1b0126f

Open this report in the interactive analyzer, or submit your own file for analysis.