Malicious PDF — malware analysis report

Static analysis result for SHA-256 b576d209899db124…

MALICIOUS

PDF

48.1 KB Created: 2020-08-09 01:15:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9c5b0a3246e0034dfd396c6e378c35b9 SHA-1: 3f2ed1efeb586c1da99a366880a26abaf9bcd5a7 SHA-256: b576d209899db124d62fe3794920db0b4279d3828d7fad83f6d55695700851fe
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=que+es+un+astrolabio+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The PDF also contains a large number of external links, suggesting a link farm or SEO poisoning tactic. No scripts were extracted from this sample.

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=que+es+un+astrolabio+pdf In PDF document text
    • http://files.longheathchurch.org/uploads/1/3/0/7/130739747/9809153.pdfIn PDF document text
    • http://nogogego.bloomcreations.ch/uploads/1/3/0/8/130814058/1344735.pdfIn PDF document text
    • http://files.hcfcorp.org/uploads/1/3/1/8/131856353/8675567.pdfIn PDF document text
    • http://files.islandparkpreservationcoalition.org/uploads/1/3/1/6/131606262/nopavifagejupabu.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/1/0435/2330/9727/files/microsoft_it_academy_certification_roadmap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3505/7559/files/english_vocabulary_with_bangla_meaning_for_ielts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1130/9719/files/81022463550.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0525/5577/files/34195852083.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7596/0985/files/cafe_latte_shakeology_recipe_calendar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7132/1752/files/30938546929.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9380/2646/files/rifem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7612/2779/files/the_strength_training_anatomy_workout_volume_ii.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9954/6009/files/kepupadosuva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3273/1038/files/xinalanunojemafirezus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5354/7677/files/waderivopo.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
    • 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67D1 5236 bytes
SHA-256: 4e8525a4d4c472321780e5255e751ef04234a780911c04b423acb503091fd0a6
font_01_sfnt_off000079a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79A1 12092 bytes
SHA-256: 49018fe967e6bdb7b77929c93708ab1c5ab2a4b915014b44388e4cfd5bde8166
font_02_sfnt_off0000a087.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA087 6700 bytes
SHA-256: 1778fc52d5c2b0fd07c2129c38f6efdf636d1c9d98383f35cca422a15452e714