Malicious PDF — malware analysis report

Static analysis result for SHA-256 88f536c070722425…

MALICIOUS

PDF

635.1 KB Created: 2020-08-15 22:26:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a15ae3b524ab594edbb99de1fdfbb7a3 SHA-1: 7eea2bde1da597936e686fc7440f0fb785a49531 SHA-256: 88f536c070722425fd9b0c5eaab79005c8f08b650066f8c37b3892fe6353a6a6
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains heuristics indicating it's a malicious redirector, specifically designed as an SEO or payment redirection lure. The embedded URL, https://ttraff.cc/pify?keyword=neurokinetic+therapy+pdf+chomikuj, is a known malicious redirector. This suggests the document's primary purpose is to lead the user to a malicious website, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8909

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.
  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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=neurokinetic+therapy+pdf+chomikuj In PDF document text
    • http://files.revivalhub.eu/uploads/1/3/1/8/131856186/gafaxilete-lalaj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5915/7921/files/l_affretement_maritime.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0994/1415/files/32984791494.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/8325/5198/files/railway_reservation_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3694/9152/files/hot_point_oven_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5271/9515/files/albany_county_clerk_s_office.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4929/5776/files/dofenijeve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3391/9645/files/63607992067.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2794/6904/files/61131082743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7654/0834/files/61185542405.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7007/0687/files/navcomp_form_3065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1540/4695/files/49314037419.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_019_off0009a4a3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9A4A3 22128 bytes
SHA-256: bdd73e96e6a1144ff58e11e8e180cf1d3f806db619f45635a01a496c5a822090
font_00_sfnt_off0008d5bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D5BF 6768 bytes
SHA-256: 5f3a57dbd4f36b60d99dfd41bad195540945bdb4adf055cc5f89772093a05183
font_01_sfnt_off0008e6bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E6BF 20096 bytes
SHA-256: 85152482e745e80e3354b84ed01f455a4142d4717f0ae4a7f1e0753ce75313fe
font_02_sfnt_off0009270b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9270B 5396 bytes
SHA-256: f5ec862dd67ea71b26224cfe06b0b833d309ce82d472e64c1cbe531fc3f8ac20
font_03_sfnt_off00093958.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93958 9528 bytes
SHA-256: bed1d87db145f61167d42b23d9e76400200c0f381ed8725de557b9965f7b1c51
font_04_sfnt_off00095454.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95454 30228 bytes
SHA-256: 2338e2bc83eadea9e3ba60b876f6cda7dd9ccbe8b2e467bd0cfc75416ad27e6f
font_06_sfnt_off0009ca0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CA0B 6128 bytes
SHA-256: 52a1f68b75921ee593ff94dfc319b5248efc3bd1ef57dab49d8caf92e84eccff