Malicious PDF — malware analysis report

Static analysis result for SHA-256 7659f715cb784e1a…

MALICIOUS

PDF

45.2 KB Created: 2020-08-20 01:16:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b6ba1b0fbf7d9a1006f541e0742ea24e SHA-1: 39063fa789b8dc6dbe76fcf30d2d18b8a6de202e SHA-256: 7659f715cb784e1a7f34a53a106965ef1e97bb4f2b32f8eac37212f5b555792a
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 ultimately leads to malicious infrastructure. The document body itself contains a URL that appears to be part of a lure for free downloads, likely a phishing or scam attempt. The ML classifier strongly supports the malicious nature of this PDF.

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.ru/pify?keyword=awadhesh+premi+2018+song+video++hd In PDF document text
    • http://bukuf.newenglandbusinesscenter.com/uploads/1/3/1/4/131453114/nemitinimidub-jazemife-pekisuxofazed.pdfIn PDF document text
    • http://files.chikuniradiozm.org/uploads/1/3/2/7/132740462/xulodetitubidusuxavi.pdfIn PDF document text
    • http://files.freekidstories.org/uploads/1/3/1/4/131406892/4313200.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9262/3001/files/sewotaderajizik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2032/8865/files/93906461510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7560/0535/files/10243149764.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1030/7749/files/kagarabamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9266/3702/files/10362142333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7865/5903/files/b._ed_application_form_mdu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4958/0704/files/609393685.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7808/1959/files/bemosalelogarezasorof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7205/2643/files/ccna_latest_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8764/2267/files/sazaram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9888/1704/files/43462704514.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 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004876.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4876 6004 bytes
SHA-256: ea8010dd24102e2ec934686319dc178f286f903cedcbe99a195c8b4ef24f1781
font_01_sfnt_off00005cd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD5 8588 bytes
SHA-256: 61c326e26b226d98d01f576201e7b027440b7a2e4cbd15d533c2645abeac6ab8
font_02_sfnt_off0000788d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x788D 10040 bytes
SHA-256: 16564f0358d7bb51d5933e0bc54fce3e637f2e54a0f7c2000db503787efaa637
font_03_sfnt_off00009b31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B31 3024 bytes
SHA-256: 91975caa618e541539d37c3145b24a781acca67c6bd4d8c3ac53863f02b2a841

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