Malicious PDF — malware analysis report

Static analysis result for SHA-256 df3c444fe4e7178a…

MALICIOUS

PDF

48.1 KB Created: 2020-08-24 06:47:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fae08acec5cd07802546e363bc4f4a11 SHA-1: 160ee28a4e085aa22f53557fd461e49f1f974cec SHA-256: df3c444fe4e7178a9017636660daf941b28cb15f8780edcaf3672511fa3b8081
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and embedded links suggest a lure to download further malicious content, likely related to SEO spam or phishing. The ML classifier also strongly flagged this PDF as malicious.

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=bu+bhopal+time+table+2018+pdf In PDF document text
    • http://files.redesignforwholefamilies.com/uploads/1/3/1/8/131857193/jowudakavesof-rusodisoton-zofokizubolas.pdfIn PDF document text
    • http://vomime.morinmath.com/uploads/1/3/1/4/131453870/57218e9d8719a4.pdfIn PDF document text
    • http://files.darryljarvis.com/uploads/1/3/1/3/131381428/xazokutileju-kukuvoja-rekinegika-deworidoxol.pdfIn PDF document text
    • http://files.drawingonmusic.com/uploads/1/3/1/0/131070044/mupesibudunug-womexezaluzo.pdfIn PDF document text
    • http://files.dixielandbandorlando.com/uploads/1/3/1/4/131438128/kobomowedelodogosek.pdfIn PDF document text
    • http://fedorahosted.org/lohitIn 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/1/0431/5929/0022/files/rapuzoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1007/2481/files/how_do_you_ping_someone_on_discord.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5184/3737/files/farming_simulator_2013_mods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8774/9525/files/rosegewufixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5298/0641/files/39161876181.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7861/5189/files/blood_supply_of_brain_and_spinal_cord.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5248/2208/files/standard_and_poor_s_stock_guide_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7105/2703/files/tofetobowowig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6009/2309/files/english_synonyms_words.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2045/1997/files/nikinonab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8976/5279/files/fimoru.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00009996.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9996 7632 bytes
SHA-256: 0e035ce8bb25a75fdc0f2da292fe548277d912268443ef0a2953c278691c45ad
font_00_sfnt_off000063bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63BF 5716 bytes
SHA-256: be54da78d7e935b49e86ef4423e8657c4d38cbd42e52632f320c476548add956
font_01_sfnt_off00007712.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7712 10004 bytes
SHA-256: a687fdeff3c0de1eb7ee4ad7f1a91cbebb251c204c9265abd7d6b4043734d9e8

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