Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7ebf5a59b94dde8…

MALICIOUS

PDF

41.4 KB Created: 2020-08-18 21:30:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c1cd315b93627d7af3cf764544e5d3e8 SHA-1: 7b1ba626759734f1d645f2aa67cdb9a3e946fab2 SHA-256: f7ebf5a59b94dde8d4156d775861d3b09cbddc9405f5f47350b5d1a1b2943ef7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous links, including a critical redirector link to ttraff.com, which is likely used to deliver malware or lead users to phishing sites. The document body text explicitly mentions "Ethical hacking tutorial apk" and includes the malicious URL, suggesting a lure to trick users into downloading potentially harmful software. The ML classifier strongly supports the malicious nature of this PDF.

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=ethical+hacking+tutorial+apk In PDF document text
    • http://files.mikewritesfunny.com/uploads/1/3/0/7/130739225/6169843.pdfIn PDF document text
    • http://files.betsyrose.org/uploads/1/3/0/7/130775866/96515b117da5.pdfIn PDF document text
    • http://files.jdmwebsitedesign.com/uploads/1/3/0/7/130775970/gevizaxina.pdfIn PDF document text
    • http://files.lslvet.com/uploads/1/3/1/6/131636914/4a92475b3.pdfIn PDF document text
    • http://xivabupe.beccamccreedydesigns.com/uploads/1/3/0/9/130968996/rizegus.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/1/0431/8524/2269/files/49978843073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5412/1635/files/chalo_2018_telugu_movie_english_subtitles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0412/4571/files/xomanalenevopov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0714/8185/files/rerufomivo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1350/5185/files/blackshot_sea_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4102/9276/files/susizugir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5152/1947/files/kevisolevedetuzenul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1055/5041/files/12596937712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/52876055892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/argumentative_essay_graphic_organizer_for_high_school.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/5948/9442/files/comparative_and_superlative_adverbs_worksheets_5th_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2616/9503/files/jigeguv.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000546a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x546A 6744 bytes
SHA-256: 8187145963fbf8e0b7977f93bb9cbfc296fb812f6e2b6f40a3c8d31ca5a797a4
font_01_sfnt_off00006551.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6551 5040 bytes
SHA-256: b627e4431652e0a090163ca49a77fc95e7b7d061287dad505b13a3001c4b3423
font_02_sfnt_off0000766c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x766C 9988 bytes
SHA-256: 668a947b59de9ce907a38f3b99362ea1497c14e01f7c3b7995d3aaac28f06ecb