Malicious PDF — malware analysis report

Static analysis result for SHA-256 caeb69718150bf0f…

MALICIOUS

PDF

41.4 KB Created: 2020-08-21 16:14:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 350dff961525a16b4429fe3b6b69bb9a SHA-1: 6eb2a0061d194cab6dc98ac746a41e5d4ff67542 SHA-256: caeb69718150bf0fdf12a50964eaaa55d3f81d2544186891a19c3e91b73deadb
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the same URL, suggesting an attempt to lure users to potentially malicious content disguised as software downloads. The ML classifier strongly supports the malicious verdict.

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=archero+mod+apk+1.+2+2 In PDF document text
    • http://files.tofugraffiti.com/uploads/1/3/1/4/131438203/gutoponurivaxu.pdfIn PDF document text
    • http://files.portogether.com/uploads/1/3/1/4/131406498/f7831b9b02.pdfIn PDF document text
    • http://files.marshallcoauburnclub.com/uploads/1/3/1/3/131398084/7669568.pdfIn PDF document text
    • http://files.godleyband.com/uploads/1/3/1/4/131453998/lizenewuxin_momutipojan.pdfIn PDF document text
    • http://files.vocations-sagesse.org/uploads/1/3/1/6/131606755/a4c5f.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/1/0437/5294/7873/files/2018_vw_atlas_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7068/4317/files/cricket_world_cup_final_score_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1350/4150/files/12772382844.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4403/5993/files/pia_vpn_adblock_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2749/5072/files/fekuguwisakanu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6693/0840/files/blackberry_10_os_games_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1049/0519/files/excel_multiple_regression_analysis_and_forecasting_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5905/9615/files/64306484301.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6714/6397/files/ncert_class_12_accountancy_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6429/4557/files/27251292813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4141/3527/files/48849660396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9400/7191/files/ziwajusejapipamidebagas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3849/9235/files/61027557255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1141/5962/files/arpeggios_rhythms_and_scales.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006495.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6495 5372 bytes
SHA-256: 5ac646552b4314c2ceba44b588750a72a294eed80747cdeac4dee2b1c642b445
font_01_sfnt_off000076b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76B7 10024 bytes
SHA-256: 1fd276ef0c84f5b776ef73456f5f9562449dd8a6f6733ab507dcf3f835056d36