Malicious PDF — malware analysis report

Static analysis result for SHA-256 835e42e6d10b3417…

MALICIOUS

PDF

50.0 KB Created: 2020-08-10 16:47:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e09156131ccd0d0475245a767c31c485 SHA-1: 4c08d96507d2e403cdf9edcc6ac5ace0826d54e8 SHA-256: 835e42e6d10b3417288a0a51027fe5e4e0f3bd98065b32f610e6bbf7905ac58d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 free downloads, likely leading to malware. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious content, potentially leveraging JavaScript for execution.

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=b.+p.+lathi+pdf+download In PDF document text
    • http://files.westaucklandcadets.com/uploads/1/3/1/4/131454523/luramogosulun.pdfIn PDF document text
    • http://files.threadstoinspire.com/uploads/1/3/1/0/131071082/seguxozowiso.pdfIn PDF document text
    • http://files.createfairtrade.com/uploads/1/3/1/8/131858481/sujemele_sasiwodip.pdfIn PDF document text
    • http://files.aa-gue.com/uploads/1/3/1/6/131607027/duzeligatamuxu.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/1/0432/1568/3743/files/doki_doki_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0611/6511/files/dakovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6839/9524/files/rikigovizotutik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3191/2857/files/20418714117.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7732/8286/files/12874180359.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3114/8197/files/wefasolovimakoradipadoru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9386/9223/files/7253020769.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6318/0454/files/anchor_hillsong_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7383/1066/files/asymptotes_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9222/9797/files/article_writing_format_cbse_class_12.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4942/6845/files/48917207712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3651/7286/files/13456538433.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9776/0668/files/vagonepujezexodopibowivi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8094/9659/files/kogolipaxumeredalejuxixis.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000648a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x648A 4696 bytes
SHA-256: f2b9d75f0afbe6beb1f10b0496670140fe74b4b903258e53419b3f37be4f7f3e
font_01_sfnt_off00007481.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7481 2116 bytes
SHA-256: 33d80b5e357abfa3ea91f5eff18928953f8e36d8e9a7aea158c838e8ae756dd9
font_02_sfnt_off00007e4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E4B 14984 bytes
SHA-256: 41b0044f7fec70db58b46099d98373a8ae9532a3553d8cf29d51a32ba9e9ae2d
font_03_sfnt_off0000ac89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC89 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2