Malicious PDF — malware analysis report

Static analysis result for SHA-256 0aaf596f8fb40d8f…

MALICIOUS

PDF

36.7 KB Created: 2020-08-21 06:25:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 18c68fc843d4a7544812fe9f125cafb2 SHA-1: 6dde24caf10c01ee2c5281daf991cf016d905add SHA-256: 0aaf596f8fb40d8f0a5c907cd91271696a1f576ce131dba61e1f89b2112ce600
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirection and a link farm, with a critical alert for a link to known malicious redirector infrastructure. The document body, though corrupted, contains a URL that is also flagged as a malicious redirector. This suggests the primary purpose is to redirect users to potentially harmful content.

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=bostik+expanda+foam+safety+data+sheet In PDF document text
    • http://files.mpregobsession.com/uploads/1/3/2/7/132710665/650db325bb32049.pdfIn PDF document text
    • http://joban.player2reviews.com/uploads/1/3/1/3/131383791/588b72668bb.pdfIn PDF document text
    • http://files.biggsbassethounds.com/uploads/1/3/1/8/131857071/84fb7a2093dbc.pdfIn PDF document text
    • http://files.foodwastetruck.com.au/uploads/1/3/1/3/131383483/a4d9ba5efd71c7.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/1/0436/4288/0160/files/knowing_god_ji_packer_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4232/4125/files/fistula_ani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1687/0309/files/98989339241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7431/3621/files/evoluo_da_atmosfera_terrestre.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5526/7496/files/jepesosalanalanozul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0923/5355/files/90895799715.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9959/4656/files/13816805390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9464/5672/files/digital_electronics_basics_interview_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7277/4556/files/favoxevivojukudejek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0560/6049/files/witaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3395/9327/files/employee_reference_letter_word_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2276/8535/files/gosipa.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000043d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43D1 5224 bytes
SHA-256: 15e147d631094e843b5cc1b68738d29837c0f37763d11b3d4514c77cb21ab60a
font_01_sfnt_off00005578.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5578 9564 bytes
SHA-256: 12bd101720f2705b2d8e0fe5a6fdd0b318ff73fb59d03bc1af705a7025c02751
font_02_sfnt_off00007634.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7634 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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