Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c76f8c9c0fd29df…

MALICIOUS

PDF

42.5 KB Created: 2020-08-23 08:22:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 47407189278812db88102a5e7b415a69 SHA-1: d88bd82a6a8e9afc4fe9cf6ad9b03d6727ce9d23 SHA-256: 7c76f8c9c0fd29df246b9d19de3190c39ca26b03e1dedd654b577a3acab25b05
194 Risk Score

Malware Insights

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

The PDF contains numerous links to a redirector service, specifically 'https://ttraff.ru/pify?keyword=hand+embroidery+bed+sheet+work', which is flagged as malicious. This suggests a phishing or scam attempt, likely distributed as a spearphishing attachment. The document body, though heavily obfuscated, also contains embedded URLs pointing to similar link farms and potentially benign content, indicating a tactic to obscure malicious intent. No scripts were extracted, but the presence of malicious redirectors and a high ML score strongly 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.ru/pify?keyword=hand+embroidery+bed+sheet+work In PDF document text
    • http://files.gptheatre.com/uploads/1/3/1/8/131857756/df10266198.pdfIn PDF document text
    • http://files.northwoodshypnosis.com/uploads/1/3/0/9/130969489/5313983.pdfIn PDF document text
    • http://files.kingstoned.org/uploads/1/3/1/6/131637896/bagok.pdfIn PDF document text
    • http://files.riverroofingbend.com/uploads/1/3/1/8/131856306/9871859.pdfIn PDF document text
    • http://files.growingthroughlosstcsouth.com/uploads/1/3/2/3/132302941/8282492.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/1/0431/3314/1146/files/33530258789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/9995/8939/files/injustice_gods_among_us_hack_android_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/5412/1379/files/some_information_about_the_planets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3671/2861/files/papyrus_of_ani_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7392/9377/files/96781641490.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8446/1720/files/triangle_symbol_text.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6443/4583/files/giwope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/5571/4199/files/woxikofenanifiso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7994/9718/files/23574890116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3367/9256/files/baladivavelovigatogip.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 8

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_off00006955.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6955 5392 bytes
SHA-256: 1d26d021502066a57ef1f5390e8fb9631e4a5d8a206f3b514bd9ac3611cc7da0
font_01_sfnt_off00007b88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B88 10000 bytes
SHA-256: 980715666cdf10ef08faf7faaec53bcdb9ccd7a3fc4bcfd4f1ce518763caa224

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