Malicious PDF — malware analysis report

Static analysis result for SHA-256 78041e418784fc28…

MALICIOUS

PDF

41.4 KB Created: 2020-08-16 18:03:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3a235cc3b12ebc123c8bf2fd4222adcb SHA-1: d229029107e67f74bbe4eff11e1fd814e528cfed SHA-256: 78041e418784fc28a93d1ae7d17a1d413f20363f6564a8787c56e730df28c79b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to SEO-optimized PDF files hosted on Shopify, likely as a link farm. A critical heuristic identified a link to a known malicious redirector, https://ttraff.cc/pify?keyword=matlab+bilinear+transformation+filter, which is also present in the document body. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for phishing or malware distribution.

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.cc/pify?keyword=matlab+bilinear+transformation+filter In PDF document text
    • http://vopuz.lembahtemir.com/uploads/1/3/0/7/130775350/nowagukeso.pdfIn PDF document text
    • http://files.studiogoddess.com/uploads/1/3/0/8/130814432/xivinux_venebigasewuku_rewuzimo.pdfIn PDF document text
    • http://ralejil.ocms-mi.org/uploads/1/3/1/4/131438800/welaniguzepuluzu.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/1/0432/8521/7436/files/condor_imdb_parents_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3482/9223/files/gafezuvalonumaporenizun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6379/4069/files/historia_del_cristianismo_en_espaa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0677/0843/files/the_giver_study_guide_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4184/8470/files/speech_writing_samples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6871/0309/files/ned_s_declassified_school_survival_guide_cast.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1045/6726/files/fezelelaxovug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6458/1525/files/akb48_senbatsu_sousenkyo_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8837/0077/files/55588605760.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/26433336276.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1363/6259/files/gantt_chart_free_template_word.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7465/8216/files/xaxivenit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6148/4437/files/air_pollution_in_marathi.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_off000061fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61FA 5056 bytes
SHA-256: f06b585d9adcdcf6163c8c9735fade3dcadf654f20e5a069f53f588ac54ddf4c
font_01_sfnt_off00007313.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7313 11060 bytes
SHA-256: f5e87374a6b25856d11f6f097b2d54a806fc142bcb98eca24fde3dd3e9055657

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