Malicious PDF — malware analysis report

Static analysis result for SHA-256 00d86a6d26bf1788…

MALICIOUS

PDF

64.9 KB Created: 2020-08-24 23:32:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dc97de433199539bfe9b946ac3d70268 SHA-1: d55b270e7e3078832a5f50a29a168311af19f1ef SHA-256: 00d86a6d26bf1788796ba152549fbb1a55e2f9ea0a02a1369e8489cb31b3ac9c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK pointing to 'https://ttraff.ru/pify?keyword=alamelu+manga+songs+free'. This suggests the document is designed to redirect users to malicious or spam content. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the sheer volume of links and the redirector URL are strong indicators of a malicious intent, likely related to phishing or SEO spam.

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.ru/pify?keyword=alamelu+manga+songs+free In PDF document text
    • http://derusoj.gregbottle.co.uk/uploads/1/3/2/6/132680955/5587591.pdfIn PDF document text
    • http://files.chulavistachamber.org/uploads/1/3/2/7/132740606/3852d.pdfIn PDF document text
    • http://noxiduj.mrmuhammadmusic.com/uploads/1/3/0/7/130775795/9493144.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8225/1421/files/tifed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3359/8880/files/angrej_full_movies_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0816/2974/files/angular_momentum_techniques_in_quantum_mechanics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jewaxepolirabosumasedud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9358/0181/files/a_level_computer_science_revision_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9413/8277/files/tefufofavejutuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1800/2340/files/mixoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/3673/2566/files/uses_of_a_liberal_education.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9703/0805/files/rigosobujolekotivit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9953/6040/files/19464414305.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7720/6178/files/edema_pulmonar_fisiopatologia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3056/1447/files/philosophical_gourmet_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3057/6295/files/gokepadotima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4418/1928/files/35245306655.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009fc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FC0 5076 bytes
SHA-256: ffa4bbfeaae4f87e6dcfd737848e0c73a151811eb8bb3300172b6e0e63c25a9a
font_01_sfnt_off0000b0ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0EE 2684 bytes
SHA-256: 86df55293b2264bc294bc01f95ebcb8ca4dd19cfd9debb2cc3147fe7781cc91a
font_02_sfnt_off0000bc87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC87 14556 bytes
SHA-256: d58a0de199576343fc5538f7e40c33e3be028a23307b21596d1e8f202b691e18
font_03_sfnt_off0000ea7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA7B 2848 bytes
SHA-256: 7c099cb770edf174c33d1ed602e794ee34bac13be3b0470a7bb37d1f9165b319