Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2dcbe1f6a62d686…

MALICIOUS

PDF

46.3 KB Created: 2020-08-03 20:32:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4dbbe25bdb1b40fca4bf844a9901ce44 SHA-1: b9fbd0c985a24072f4e349d7ee60099d891d7ee8 SHA-256: c2dcbe1f6a62d686203d0e5a81715811afd88bdd693575d8e6a327c38dc4cc48
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=boricua+definicion+pdf'. This indicates an attempt to redirect the user to a malicious site, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains the same URL and text related to 'Boricua definicion pdf', reinforcing the lure. The presence of a large number of external PDF links also suggests a link farm tactic.

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=boricua+definicion+pdf In PDF document text
    • http://files.freedomdds.com/uploads/1/3/1/3/131379830/sulopepalakanune.pdfIn PDF document text
    • http://files.carlabrooksphotography.com/uploads/1/3/0/8/130873820/2314266.pdfIn PDF document text
    • http://files.theurronstudio.com/uploads/1/3/1/4/131438557/kovubuvex-xevukawajinu-vixinesilupabox-dinaxex.pdfIn PDF document text
    • http://files.themagicalway.com/uploads/1/3/2/7/132741029/rivaju-xikiragaj-megob.pdfIn PDF document text
    • http://files.thegreatwines.com/uploads/1/3/0/9/130969835/c1fda23.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4774/6710/files/gewurutosufega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3260/0985/files/34242367590.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5986/3961/files/66671351540.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7183/1193/files/34543820643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1007/2481/files/halfling_ghostwise_5e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1850/0765/files/ati_teas_secrets_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5235/2159/files/69589926007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6209/8085/files/fofadagaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8220/3801/files/zeluloletesanodezejerirod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6716/9173/files/91973820009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8611/9079/files/moxakudu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A0B 4792 bytes
SHA-256: dc9fe31c397188d60af89d6d4fdadbe466b2c7e75808233dc3f7be395b68b574
font_01_sfnt_off00007a5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A5A 10968 bytes
SHA-256: 2b61bd1d302d9b40e5336c8b8150a978c7af9cd9fb7794d47f1b4ccb515b9fac
font_02_sfnt_off00009e3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E3C 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333