Malicious PDF — malware analysis report

Static analysis result for SHA-256 625f19c99da73277…

MALICIOUS

PDF

42.3 KB Created: 2020-08-06 07:07:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d36a68db406e63c4934215caf48d260e SHA-1: 53f0c7ce43ff45ae874b880a349469bbe7d4113b SHA-256: 625f19c99da73277349e5ebeb463e15b4d8a2ca1f834872ccde48b85691b0e28
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous links to an SEO redirector, which is a common tactic for phishing and malware distribution. The primary redirector URL, 'https://ttraff.cc/pify?keyword=english+language+teaching+methods+tools+techniques+pdf', is flagged as malicious. The document body, though heavily obfuscated, also contains this URL, suggesting it's the intended lure. The presence of a large number of external PDF links further indicates a link farm designed to attract traffic.

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=english+language+teaching+methods+tools+techniques+pdf In PDF document text
    • http://files.jakecastrosoccer.com/uploads/1/3/2/6/132695525/tafedazewumemolur.pdfIn PDF document text
    • http://files.dawnentertainment.net/uploads/1/3/0/7/130775768/f8177a5d.pdfIn PDF document text
    • http://juwefo.reid-online.com/uploads/1/3/1/6/131637254/dejenel-wilisaxe-bixonomizaxaf.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/1/0431/0899/1125/files/51723899714.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6821/9799/files/mujanezuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7418/2563/files/microsoft_space_simulator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6797/4556/files/37698775041.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5238/3904/files/sobisuso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4361/8969/files/wusufizatati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8189/9944/files/14347644283.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9160/7190/files/devalalunulofaleliser.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0973/5845/files/84389837630.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0477/1999/files/45311795833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7298/6015/files/4735462149.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/macbook_github_boot_to_a_usb.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_off000066bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66BC 5556 bytes
SHA-256: 8f880c81e89ca81f3349d4a538696975b0ab51ed9ab0fe00050f35432d9113b8
font_01_sfnt_off0000797d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x797D 10080 bytes
SHA-256: 92c57d2d8eed6f246c25d08c93a8d061aa781b33c58387c67a11aaf2ee2fc582

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