Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b2fe44f61e9b3dd…

MALICIOUS

PDF

52.1 KB Created: 2020-08-21 18:32:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 58211ac8164f5940af0503d18c01a840 SHA-1: 6f8381040177abcb6347bbffcc0fb0b58e802186 SHA-256: 8b2fe44f61e9b3dd2c651a65f81362f6137d04680402121efd4b56cddbe293d0
194 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of external links, indicative of a link farm or SEO manipulation tactic. One of these links, 'https://ttraff.cc/pify?keyword=black+tongue+nadir', points to known malicious redirector infrastructure. The document body itself is heavily obfuscated and contains embedded URLs, further supporting the malicious nature of the file.

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=black+tongue+nadir In PDF document text
    • http://datezasi.theshak.com.au/uploads/1/3/1/4/131452883/f5d31bef.pdfIn PDF document text
    • http://files.spiritofthe8thfire.com/uploads/1/3/1/3/131379037/gafifedaxegipobekowa.pdfIn PDF document text
    • http://bukonag.concertsbythecreek.com/uploads/1/3/2/3/132303168/bulejujez.pdfIn PDF document text
    • http://zexafer.hysterectomywithouthospital.com/uploads/1/3/1/6/131606289/beveverafuke_sawosafixerot_tulezegem_zuxekasabut.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/1/0448/1040/4000/files/react_js_tutorial_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1905/7822/files/84186725604.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7963/9967/files/20469454117.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2446/3525/files/69710427439.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3308/4575/files/34330301872.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1142/3902/files/kojigafariwuxifad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0053/6986/files/ropenumedifam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/7946/2040/files/asperger_adultos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1201/2701/files/81019635021.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8494/6333/files/badli_badli_lage_ringtone_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0163/4213/files/freebitco._in_hack_script.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0761/4882/files/64046132798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9592/5671/files/ruvunugonom.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_off0000814c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x814C 4924 bytes
SHA-256: dcd0963c7f14db31fd1d8d1c8d1a36e72430b84cffb4ad8c1f1ad02f998d65a3
font_01_sfnt_off00009213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9213 10192 bytes
SHA-256: 4e944684bf27d6764bdee15a7958c151d957566dcd1d9fed6b9c0c16bfad50fa
font_02_sfnt_off0000b4fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4FD 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c