Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e106987a48b62ff…

MALICIOUS

PDF

44.2 KB Created: 2020-08-24 01:33:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d305006ef597a09c7aa82e48682ffa5c SHA-1: 0c760d1d5668aee72115405bb7a8afb0dae713af SHA-256: 4e106987a48b62ff1f7cd41cb80bb8b1d43d63aa9bba1dbc53e30f6fc1b731cd
214 Risk Score

Malware Insights

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

The PDF contains a prominent link to 'ttraff.cc', identified as a malicious redirector, disguised with text related to 'ACCA exam structure'. The document also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on Shopify. The presence of a callback lure suggests a potential phishing or tech-support scam pretext. No scripts were extracted, but the primary attack vector appears to be directing users to malicious infrastructure via embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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.cc/pify?keyword=acca+exam+structure+pdf In PDF document text
    • http://files.halseyband.com/uploads/1/3/2/8/132815123/negirumigafurezupabi.pdfIn PDF document text
    • http://vokuman.birgitbaader.com/uploads/1/3/1/3/131380729/sutelabuju.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/1/0435/3415/5928/files/hosts_file_windows_7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2284/4067/files/steam_slow_downloads.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4620/5602/files/40053574663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8720/7331/files/tavoloderumog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6955/4329/files/jakavevekit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3111/6448/files/virofuxexuvuxuvu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8569/9997/files/autocad_14_tutorial_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2819/3184/files/pevomuvubimidifududemalun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7079/7462/files/latefobelape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8687/9647/files/minecraft_cracked_1._5_2_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6855/5415/files/6907723895.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1279/2221/files/standard_definition_tv.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_off00006f07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F07 5324 bytes
SHA-256: d16db0de1885e64b0ecd9ddf6bfc6cf51551775a0fb0973908c014b13410029f
font_01_sfnt_off0000810d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x810D 10308 bytes
SHA-256: 1125df2c36c3314b6a606d34c53bdcec77362cd746ff4054ee393e6e5b373afd