Malicious PDF — malware analysis report

Static analysis result for SHA-256 84f0b87768f74d15…

MALICIOUS

PDF

40.3 KB Created: 2020-08-20 12:42:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 16b489e8bcfcdae1a68376f2c09ceb87 SHA-1: 6c4b1aae1f9b7696d93a9829fd896f278346fe9c SHA-256: 84f0b87768f74d151f8c8d06079b99cd844370c0469fce57311b7c7d3d2e8d3c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service that is flagged as malicious. The document body and heuristics indicate a lure for a 'free online template for resume', which likely leads to a phishing or malware download site. The ML classifier strongly supports the malicious nature of this PDF.

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=free+online+template+for+resume In PDF document text
    • http://files.dougsbmr.net/uploads/1/3/0/7/130739383/8514821.pdfIn PDF document text
    • http://files.dicastables.com/uploads/1/3/2/7/132712235/videnexaw-rivanokuvobed-bubokusibinuwo-xinefojulaxedo.pdfIn PDF document text
    • http://files.carolynleighthomas.com/uploads/1/3/1/3/131379860/wapase_sujazidifuse_guzuwo_kimazozeziva.pdfIn PDF document text
    • http://pewexe.earthtocolor.com/uploads/1/3/2/6/132680866/nosefebixewed_zavilam_rozikeri_liranexow.pdfIn PDF document text
    • http://kikub.karenlabeau.com/uploads/1/3/1/0/131070197/risajigotati_monowizi.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/1/0429/1916/6119/files/bipomaniwojuwadukimim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/7349/5200/files/interpreting_ecological_data_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0634/5895/files/zoology_mcqs_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3815/4653/files/texubibozexapokipo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1075/2663/files/rovalemekowadapevoxiruvaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6705/6023/files/authorized_king_james_bible_1611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4754/1146/files/field_manual_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7916/4314/files/85111974454.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3461/5706/files/55856042816.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006483.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6483 5000 bytes
SHA-256: 768e52676a047eb480ca64f1d679b8d884f40cdea3a594b1fc6abb805a16a189
font_01_sfnt_off0000756c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x756C 9116 bytes
SHA-256: e60e9d568df6f690720d7358122a19577e37355ed853aa1c9b2998edabb99470

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