Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f743a7b87bb755a…

MALICIOUS

PDF

35.5 KB Created: 2020-08-16 15:41:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 15c2ca834fde8efd96edbcd7a0f0193b SHA-1: a90d78c79fa7b34d3be562773ebd8db811845c59 SHA-256: 1f743a7b87bb755a2024842e831f43714f6183a95cdee89b494b363ea77694a9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm and a redirector URL, indicating a phishing or scam attempt to lure users to download potentially malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external links, including one to a known redirector, supports this assessment. The document body contains garbled text but includes the malicious redirector URL.

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=last+blade+2+apk+android In PDF document text
    • http://wexog.conjureknits.com/uploads/1/3/2/6/132681670/cc90ccb.pdfIn PDF document text
    • http://lekuzabiz.craftofscientificwriting.com/uploads/1/3/1/3/131379808/c5e48fdd27a9.pdfIn PDF document text
    • http://files.nekrubs.com/uploads/1/3/0/7/130739656/2536084.pdfIn PDF document text
    • http://rarisex.roland-realty.com/uploads/1/3/1/6/131607163/9242480.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/1/0432/4166/8775/files/80990347015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1645/3272/files/70820082393.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/5837/7383/files/virtual_assistant_business_plan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6971/0241/files/attributes_of_a_leader.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54729765263.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9684/2142/files/41701353466.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6862/8890/files/befol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6990/6852/files/25311848071.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1747/0101/files/red_black_tree_deletion_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4464/1695/files/sun_tracker_pontoon_boat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/used_car_bill_of_sale_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6305/8333/files/54726358439.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0898/1153/files/xikezuxamilugenureso.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 4

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_off00004d37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D37 5228 bytes
SHA-256: 2ecd529f2d2287b61ce7c936cf5ad5d9f0eaadb0a584d2f535fb003e9c9ff540
font_01_sfnt_off00005f0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F0C 10000 bytes
SHA-256: 2cf5276293f338886ca8fecb084d0232309531862808ef15c894e3fcdf799ea4

Open this report in the interactive analyzer, or submit your own file for analysis.