Malicious PDF — malware analysis report

Static analysis result for SHA-256 4251352bce0ffba9…

MALICIOUS

PDF

47.8 KB Created: 2020-08-15 08:37:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 07adf6d23e3b4c9cb88bd747b5e8243f SHA-1: b54ab0cf72ee922da8de3e7c9eb44d70fa521aac SHA-256: 4251352bce0ffba97b98e3d8d8a547f70dfa4ebeb73376712e056a70f437dfed
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wb?keyword=3d%20scroll%20saw%20patterns%20&%20techniques.pdf'. This URL is presented within the document body, likely as a lure for users to click and download something malicious. The presence of a 'download button' heuristic further supports this social engineering tactic. No scripts were extracted, limiting the analysis of the payload.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wb?keyword=3d%20scroll%20saw%20patterns%20&%20techniques.pdf In PDF document text
    • http://files.livbeauty.net/uploads/1/3/1/3/131378779/de637815dd1.pdfIn PDF document text
    • http://files.sandiego173rdairborne.org/uploads/1/3/1/3/131380627/6856790.pdfIn PDF document text
    • http://files.mattcarmean.com/uploads/1/3/1/1/131164231/digabak-fatitarib.pdfIn PDF document text
    • http://files.kawvalleyhearing.com/uploads/1/3/0/7/130775784/relulof.pdfIn PDF document text
    • http://files.olilazarusphotography.com/uploads/1/3/0/8/130814032/f916b15ce998.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/1/0427/9471/3244/files/android_map_network_drive_as_local_folder.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/dejojonimaxisonix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1900/2279/files/bible_study_topics_for_youth.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/8504/2598/files/spatial_data_analysis_in_ecology_and_agriculture_using_r.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2828/1506/files/75469399445.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6134/6466/files/77905288541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4061/3286/files/81457885661.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8141/4296/files/10637489720.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/4076/3030/files/kk_slider_soundfont.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7142/2102/files/52596252102.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0840/1316/files/4197887659.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7679/7081/files/effortless_mastery.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5965/9420/files/82702359986.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_off00007cc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CC4 5228 bytes
SHA-256: 456771de777b04855ccf81316c71fb42287ac9dedf5fd6192a0751882bfde275
font_01_sfnt_off00008e9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E9C 10364 bytes
SHA-256: 8092cbbf9d7f5b101f24e579ab84e30688c3f4f535380d704d75bb01706f8e32