Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fcd6f2b489f6be4…

MALICIOUS

PDF

42.7 KB Created: 2020-08-21 06:33:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5d57dec83494bb11c5bbdd8b127bf0ef SHA-1: 606fa337418d7a39b3160acd99b7b8a443a4fdb1 SHA-256: 9fcd6f2b489f6be439e6f7e88b533c6f6d0dd1d69991209d858f64cb244e64d9
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many pointing to Shopify domains hosting benign PDFs, but also includes a critical link to a known malicious redirector at 'ttraff.com'. This suggests a link farm or SEO manipulation tactic to distribute malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the presence of malicious intent.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=bully++for+android+netblog In PDF document text
    • http://zezel.nykpart.com/uploads/1/3/1/3/131383775/zatobotisegetememet.pdfIn PDF document text
    • http://joxusap.hiltonsls.com/uploads/1/3/1/1/131164250/bifexiwiduxalel.pdfIn PDF document text
    • http://files.gustafjackson.com/uploads/1/3/1/3/131378771/xetedotatalaxi_ziriwaba_fifiviri_kerezikosopenuv.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/1/0431/2802/9345/files/geometrical_tolerances_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4095/5803/files/lawuso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9033/7189/files/94943077631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8131/0101/files/house_rental_agreement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9064/8994/files/6203316542.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0369/6536/files/collections_in_java_with_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4462/5822/files/61564776032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7917/2257/files/despacito_lyrics_video.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8777/3342/files/1613660842.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0773/5969/files/seek_thermal_imaging_camera_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kofuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/2768/5525/files/interpretivist_approach_to_qualitative_research.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7318/4678/files/34364469384.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 1

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68FB 5188 bytes
SHA-256: 0283ac1ce58cb544716139e14a9b0a82af32fbcabcca9c37758d50c563efe814
font_01_sfnt_off00007abb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ABB 10452 bytes
SHA-256: e7a223623fdadd97f8b2024543544cbbfee4940886ea9979d8e88e330932d16c

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