Malicious PDF — malware analysis report

Static analysis result for SHA-256 f779b91537f4e10f…

MALICIOUS

PDF

42.4 KB Created: 2020-08-26 07:27:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5e05365775d69f333c7c01fc0e39b432 SHA-1: ac2774e659910fa0916f129bc3a7db865eba199c SHA-256: f779b91537f4e10ff289a4965dd52b5ff8d4371ca0788749722c6ebb5327f54b
194 Risk Score

Malware Insights

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

The PDF file contains a link farm and a prominent link to a redirector URL. The document body, although heavily obfuscated, contains the same redirector URL. This suggests the primary goal is to lure the user to click the malicious link, likely leading to further compromise.

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=advantages+of+the+corporate+form+of+business+include+which+of+the+following In PDF document text
    • http://files.coggeshallburr.com/uploads/1/3/1/3/131383651/likajobugad.pdfIn PDF document text
    • http://lebokaj.mariongrp.com/uploads/1/3/1/1/131164250/govim.pdfIn PDF document text
    • http://peverim.rlcraftvinylstore.com/uploads/1/3/0/8/130874063/73890921136b8c5.pdfIn PDF document text
    • http://weposin.dockside-engraving.com/uploads/1/3/1/4/131437987/9487862.pdfIn PDF document text
    • http://files.markvillemassage.com/uploads/1/3/1/3/131379792/4ccc57.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/1/0440/7800/6437/files/lisugolagevi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7511/6961/files/dojopisiratepo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2971/5354/files/nios_case_study_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5787/2039/files/58775183114.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0468/9982/2752/files/mental_math_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0754/1401/files/fishing_guide_firth_of_thames.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9371/1265/files/pezedeluwodiragugafon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8316/0995/files/neluwapifibela.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gigogew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4713/2068/files/resoluo_see_mg_n_2197_de_26_de_outubro_de_2012.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7061/1871/files/kuxafizimifoperuwipoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/0786/8834/files/fssai_answer_key_2019_technical_officer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/1710/1466/files/car_inspection_report_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/2462/4288/files/protect_adobe_reader_dc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7265/1413/files/holistic_assessment_in_nursing.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64E0 5852 bytes
SHA-256: 292687e08b56872b7ea3a65c5e8d38d171af6796eae22e92050c8cda5e5cfefa
font_01_sfnt_off000078b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78B2 10404 bytes
SHA-256: 8d84c36f713914980e01c18c7b74de7d607df581991333f95b2b12b6a3411426