Malicious PDF — malware analysis report

Static analysis result for SHA-256 e236a43f7dda0afd…

MALICIOUS

PDF

48.4 KB Created: 2020-08-11 05:07:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c236f1000386ba34a4715342c365967d SHA-1: 2c925f48ab76ca62621704f68980bc671df9871c SHA-256: e236a43f7dda0afd419bc664402d79bb17d9b696f58bec99368b5805a79f06a5
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to a known malicious redirector at https://ttraff.com/pify?keyword=makalah+akuntansi+pemerintahan+daerah+pdf. Another critical heuristic identified a PDF link farm, suggesting an attempt to manipulate search engine results or distribute malicious content. 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.com/pify?keyword=makalah+akuntansi+pemerintahan+daerah+pdf In PDF document text
    • http://xubosu.rekwiredcosmeticsllc.com/uploads/1/3/1/4/131405927/1481006.pdfIn PDF document text
    • http://files.harelluz.com/uploads/1/3/2/7/132741241/susorisado.pdfIn PDF document text
    • http://files.paperchasewholesale.com/uploads/1/3/1/4/131407918/9ce7143c82da205.pdfIn PDF document text
    • http://files.sidecloset.net/uploads/1/3/0/7/130776327/7e454d99f.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/1/0435/8314/4104/files/bezivubufote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3016/7202/files/kubokimewopanefodilotip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/bsc_computer_science_subjects_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/84032160328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3508/2402/files/bedulikorefanosoluzuzene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6939/0500/files/stk_power_amp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3298/4222/files/81131719693.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8827/2807/files/amtrak_surfliner_schedule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4950/8246/files/lusepunijamivuviveta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4047/2229/files/kupor.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 7

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_off000080d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80D2 5352 bytes
SHA-256: 26eb1bde77ec4874a64896d0187765ebe813f49d017c9b3b4cc4844df51c79fa
font_01_sfnt_off000092da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92DA 9924 bytes
SHA-256: a5d651a329d265e078a492cc1bd540792bf6bf9f444d936869e1b0162fc70f5d

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