Malicious PDF — malware analysis report

Static analysis result for SHA-256 2683791634a3d470…

MALICIOUS

PDF

43.6 KB Created: 2020-08-19 10:10:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a7f1792e135fa54a4663a5e26f3ca3f4 SHA-1: afa42101a2274c5b96dc9c52ba393ce0a5d2d276 SHA-256: 2683791634a3d47045f98ed4bc1bbf7cd09571ff158785a8fe1666ce9ad0fa59
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=cambio+climatico+en+bolivia+2016+pdf', which is flagged as a malicious redirector. The presence of numerous external PDF links suggests a link farm or SEO manipulation tactic, likely to distribute further malicious content or phish for information.

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.cc/pify?keyword=cambio+climatico+en+bolivia+2016+pdf In PDF document text
    • http://sodaro.printedrockets.com/uploads/1/3/1/6/131637136/3410352.pdfIn PDF document text
    • http://fuzukusun.trinityumc-bsg.net/uploads/1/3/1/6/131606490/gegamufu.pdfIn PDF document text
    • http://risij.paulgiessmusic.com/uploads/1/3/1/4/131438268/lezowivebovuk.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/1/0431/7098/8196/files/78209732173.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9898/7941/files/walk_thru_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7679/7081/files/34343656251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2416/0667/files/24373353268.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3173/2122/files/buranadizizemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0577/1927/files/59064397950.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7049/6672/files/konditionalstze_deutsch_bungen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3484/5079/files/33728650252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0620/3803/files/storyboarding_basics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9044/2395/files/72927339578.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_off0000686b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x686B 5612 bytes
SHA-256: 20af5a01f773e61f86854a8b0fe7a260418cab7dc23e5384d7febd0f197eab29
font_01_sfnt_off00007b7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B7E 11460 bytes
SHA-256: 37dd8c0104ca78b341457b6a6d2ca3c5050f7c0547d2cf32767c930e72c70e8d

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