Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fbe09d180ae4ae9…

MALICIOUS

PDF

39.8 KB Created: 2020-08-13 00:50:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7654ad394148439fc7d97e236b1cc523 SHA-1: 6eb1159095ead1869185e5ab44996a9254211e67 SHA-256: 9fbe09d180ae4ae9ea10ac8e6df54263eb86c53d14570f9a2e88377477ae6a83
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Bushcraft 101 pdf portugues download' and includes the primary malicious URL. This suggests the PDF is designed to trick users into downloading content from malicious sites, likely for phishing or malware delivery. No scripts were extracted, limiting the analysis of specific execution behaviors.

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/wb?keyword=bushcraft%20101%20pdf%20portugues%20download In PDF document text
    • http://jexavi.cornerstonepie.com/uploads/1/3/1/6/131636948/e6e7d.pdfIn PDF document text
    • http://files.davertskate.com/uploads/1/3/0/7/130739462/44d127c5ea638a.pdfIn PDF document text
    • http://files.cyclingadventures.net/uploads/1/3/2/6/132695689/sulexovabub_bubizelogu_mekodovi_pinuvawenun.pdfIn PDF document text
    • http://files.leftcoastarchitecturalhistory.com/uploads/1/3/2/8/132814611/6857939.pdfIn PDF document text
    • http://files.niwawriters.net/uploads/1/3/0/8/130873758/voxewi.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/1/0452/7095/8241/files/cefr_levels_description.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0147/8311/files/telecharger_alter_ego_b2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/23083433767.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6499/9588/files/49923632185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/1198/4795/files/sujet_brevet_2020_pondichry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7515/7670/files/titedegomogesopafu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0632/8995/files/raxuradanag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0653/3525/files/suxevaduwufutigolilaga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0976/7584/files/candide_par_voltaire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2371/8805/files/verbe_avoir_et_etre_au_present.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7709/8913/files/vemojosigotikilut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46150969179.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004bd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BD3 5584 bytes
SHA-256: 4416234a1a6e9166584f1dab877cae8030e19ec8995e92ea931cf55ba5464d5d
font_01_sfnt_off00005edf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EDF 11604 bytes
SHA-256: edf1e164c30485283df8ee6e64931b272204ff9f088c0078499b79adac1bbcff
font_02_sfnt_off000083f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83F5 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71