Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e1c99fcc669438c…

MALICIOUS

PDF

32.5 KB Created: 2020-08-22 11:29:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f370422c482c049eb4586cda6f52b813 SHA-1: 07141262fdf72f6aefe43b5d818a19d4bc2e0940 SHA-256: 7e1c99fcc669438c17a4d2004ea85ddefd3571df03b4ad9f2a4c390a089783ee
194 Risk Score

Malware Insights

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

This PDF document employs a link farm strategy, embedding numerous links to external PDFs, many hosted on Shopify. The primary malicious link, https://ttraff.com/pify?keyword=co2+welding+machine+specification+pdf, is identified as a malicious redirector. The document's structure and embedded links suggest a phishing or scam attempt, likely aiming to redirect users to malicious content or further phishing pages. No scripts were extracted, but the PDF's structure and embedded links are sufficient to indicate malicious intent.

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/pify?keyword=co2+welding+machine+specification+pdf In PDF document text
    • http://files.shirleyanneceramics.com/uploads/1/3/1/4/131438501/gerenopij.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/1/0431/7151/2480/files/25945463116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7727/1703/files/punixulomifobel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2391/6443/files/define_corporate_social_responsibility.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1748/3934/files/joxupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/22700630349.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0523/7657/files/kapaxojok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4104/6171/files/85445693677.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6338/6016/files/jorozikale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lorirazapevimixawas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1051/2280/files/lines_slopes_and_equations_revisited_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1997/6350/files/mirisuga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/5352/6690/files/ornamental_fish_farming_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3522/1403/files/kowaziwojofawi.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_off0000409f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x409F 5600 bytes
SHA-256: 7818b53cb0db6925101b0456b17dd3d034363cc8127cca8a89319f787e6abcf3
font_01_sfnt_off00005399.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5399 9868 bytes
SHA-256: d6b327142345df4885d88cf404e4f1e00935f8c8b0442a92e31562c709cec67d

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