Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7d8879b8263b8c6…

MALICIOUS

PDF

44.6 KB Created: 2020-08-06 05:28:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9a31d21f8aa1487d027f5f4fafed5cce SHA-1: 2ad766c296716e517d57c5ddd8ca3df756c45ceb SHA-256: c7d8879b8263b8c63b05c51dd282e126a84e59b0982756cf8d6e6e00993a232b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm and redirects to a known malicious redirector, indicating a phishing or scam attempt. The ML classifier strongly suggests maliciousness. The embedded URLs, particularly the one pointing to 'ttraff.com', are indicative of a malicious redirector used to funnel victims to 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.com/pify?keyword=bncc+do+ensino+m%25C3%25A9dio+em+pdf In PDF document text
    • http://files.globaltimberinc.com/uploads/1/3/2/3/132303133/4728891.pdfIn PDF document text
    • http://files.the5thparlour.org/uploads/1/3/0/8/130814076/nupurevofugod-rekudotekajom-gabajeta-bupofikamirav.pdfIn PDF document text
    • http://files.carlsbaddesal.com/uploads/1/3/1/4/131438180/fagaz.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/1/0440/8334/7606/files/beginners_english_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8370/3206/files/21937885364.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2621/8134/files/gisevowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7745/1428/files/zidelaleje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3092/1895/files/b._sc_maths_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1810/0637/files/barry_s_bootcamp_workout_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wixedazatujiguxup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9729/2949/files/fafuwevamojupufaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8560/2721/files/77120699378.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8434/0630/files/73192875951.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5040/1943/files/all_the_lovely_bad_ones_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4681/3344/files/77179474004.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6229/5714/files/fegepitij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5265/5002/files/64219808307.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 4

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_off00006ca2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CA2 5152 bytes
SHA-256: 040385267a8781ee6dcdf1606a5f2f402d6a168195e38c4f946f33855756d44d
font_01_sfnt_off00007ddf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DDF 12528 bytes
SHA-256: 7c71c50766fb3fc3321011884ec6a35c6ff9f7aae3c13a27b01ebbd4d28e58f8

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