Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8db34828f865f22…

MALICIOUS

PDF

51.6 KB Created: 2020-08-13 23:30:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c602a171df2628d935a7ea7e3ff821fa SHA-1: eecf7171683947c5c5f806b54ceb50a80b334b15 SHA-256: a8db34828f865f222720b0e8eb3609742acbc81fb97296050fba34f52474913e
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it features a large number of embedded external links, many hosted on Shopify, which is characteristic of SEO poisoning or link farm tactics. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the presence of the malicious redirector strongly suggests an intent to lure the user to a harmful destination.

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.com/wb?keyword=tnfusrc%20result%202019%20pdf In PDF document text
    • http://files.deborahlawrenceschafer.com/uploads/1/3/2/6/132681579/b064cda64e8254.pdfIn PDF document text
    • http://files.emilybridghamportfolio.com/uploads/1/3/2/6/132681992/8081417.pdfIn PDF document text
    • http://files.buttonplanet.com/uploads/1/3/1/6/131606878/biriregagasu_jexibofuxodo_wobesadejolari_miruz.pdfIn PDF document text
    • http://files.jenniferrosewebster.com/uploads/1/3/1/8/131856435/f0f544827c05485.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/1/0430/0813/1233/files/calendario_juventus_2020_19.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3095/3630/files/minecraft_pumpkin_pie_recipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1478/2104/files/93022767115.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9058/3464/files/regenobaxumotinik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bofudajix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8541/4056/files/vedujamapetotil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2608/7064/files/41697565352.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8579/8301/files/61710783208.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5458/8316/files/kadambari_free_download_in_bengali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/types_of_business_model_generation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1430/6467/files/recent_banking_awareness_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9780/0350/files/javirawamedodiw.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007563.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7563 5368 bytes
SHA-256: 4be1809d2b6c606e3bac487e0e292e3b6d05d74ab30e751373164c2e5ca49916
font_01_sfnt_off000087b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87B6 11228 bytes
SHA-256: 11854f68825ff6895842377b742a7016e5aaa15603e22b0ad17ac82902f70be1
font_02_sfnt_off0000ac82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC82 16092 bytes
SHA-256: 9af6fc3bf9d751f70540aea0fa47faa159a3604992cda23d2adcda3ffc5346b2