Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b7a7e1f366a90f5…

MALICIOUS

PDF

43.2 KB Created: 2020-08-22 00:22:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 940c4ec8ad86de1f35aebb9d539f509e SHA-1: 39ccd88abb901c0ffb560cbcec950ff11c45c7a1 SHA-256: 3b7a7e1f366a90f524cec0b2afdcc2f0f792ec9ebaed068f038a48d35d319f92
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 pointing to 'https://ttraff.ru/pify?keyword=lite+brite+sheets+printable+free'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many of which point to Shopify domains. The primary malicious link likely serves as a lure for phishing or to download further malicious content.

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=lite+brite+sheets+printable+free In PDF document text
    • http://files.ourladyoflourdesparish.ca/uploads/1/3/0/7/130775653/xubotikeke_pakizos_pumevepifi.pdfIn PDF document text
    • http://files.fyldecoastplayers.com/uploads/1/3/1/1/131163898/8941249.pdfIn PDF document text
    • http://wixemidot.creativesheetmetalworks.com/uploads/1/3/1/4/131408024/jodovezobanamituso.pdfIn PDF document text
    • http://jadutuduv.graywaycreations.com/uploads/1/3/2/6/132695328/7360580.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/1/0437/1048/0533/files/tirifodizozagadeken.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0300/9434/files/69046094026.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8015/5289/files/aldi_talk_aktivierung_app_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8537/9237/files/how_to_master_airbrush_painting_techniques.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5832/1821/files/53713243206.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1548/8163/files/83917848432.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5054/0964/files/25125944169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7431/3621/files/minor_cofactor_and_adjoint_of_a_matrix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8015/4269/files/dexewimixunarix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/17612659915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4856/6938/files/upkar_film_song_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6165/8279/files/50264919766.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0702/5060/files/potanufak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7365/9292/files/tennis_elbow_exercises_australia.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_off00006ade.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ADE 5072 bytes
SHA-256: 334fea37579a57ce69ad46e4395184a3d213e3301bc8793adf30c89d6832f09d
font_01_sfnt_off00007c0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C0E 10420 bytes
SHA-256: de6d52a5f42fee00cdccdb6abc571c3e0b9b6fed043bbbf2314a8482ebf7f3af