Malicious PDF — malware analysis report

Static analysis result for SHA-256 0627ad20daf44d03…

MALICIOUS

PDF

42.3 KB Created: 2020-08-19 22:12:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e34397ab3e689cf00ad61b46f9836d39 SHA-1: 25dd0e52b23ebbb3519d40d7ce6d05fe3daf8eb5 SHA-256: 0627ad20daf44d03fe5b188a1ffe1213fb0d83589316fb2acc1411182f6800ea
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to a redirector service (ttraff.com) that is flagged as malicious. The document body and heuristics suggest a lure related to 'top guitar chords android app' and 'free download phishing', indicating an attempt to trick users into clicking malicious links. The ML classifier strongly supports the malicious verdict.

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=top+guitar+chords+android+app In PDF document text
    • http://files.jessicafeldheim.com/uploads/1/3/0/7/130739061/zunevofin.pdfIn PDF document text
    • http://nugule.roguepugs.com/uploads/1/3/1/3/131380999/nidubaber_soremowusedoxu_wopimupilesutu_disexidokisaf.pdfIn PDF document text
    • http://masogad.myvoiceback.com/uploads/1/3/1/6/131636725/semesidite_pabimiguduza_mipamelal_tamusorik.pdfIn PDF document text
    • http://files.authoramyrichie.com/uploads/1/3/1/3/131383325/basupixebo-samaromove.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/1/0427/8360/4903/files/green_book_singapore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3576/9497/files/excel_vba_sort_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6728/4379/files/characteristics_of_bryophytes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9071/5548/files/29079025936.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8706/9335/files/71617534196.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/63016720996.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8309/5459/files/34101025039.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9072/2469/files/88285442947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3001/9229/files/34602041197.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7624/7967/files/63250636843.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0119/0299/files/44568475279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3815/4658/files/rabakijuvujowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9699/8048/files/30238572158.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 6

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_off0000675e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x675E 5252 bytes
SHA-256: d38eb7ecf9f4791a565a5b922ee9e4cda4f7851c744ddc38d6ef8c9d4853b2da
font_01_sfnt_off00007930.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7930 10288 bytes
SHA-256: daf1882e0c79925bebcacbd63cd7cda87488147d481098f030192b6f9bf71279

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