Malicious PDF — malware analysis report

Static analysis result for SHA-256 75d022334bc6292c…

MALICIOUS

PDF

43.5 KB Created: 2020-08-10 23:59:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 397c2156e42dd424fff85461659e9376 SHA-1: 35567f321db240d7692df2290d5c0e2bd0ccdc4b SHA-256: 75d022334bc6292c6f2cc342c062e9e2885d901e0d245656555b643f6bb1e780
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to appear as a link farm for free PDF downloads, but the primary link redirects to a malicious redirector. This redirector is likely used to funnel victims to a phishing page or to download further malware. The ML classifier strongly indicated maliciousness, and the presence of a malicious redirector URL confirms this 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.
  • 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=o+futuro+da+humanidade+augusto+cury+pdf In PDF document text
    • http://files.hooksnsinkers.com/uploads/1/3/0/7/130775115/4e3a01d84d85a.pdfIn PDF document text
    • http://files.ridgecrestelementarypta.org/uploads/1/3/1/4/131453698/8889495.pdfIn PDF document text
    • http://files.geraldbuckfield.com/uploads/1/3/1/4/131452949/tosowozotufixowowax.pdfIn PDF document text
    • http://files.kudubijou.com/uploads/1/3/2/8/132815178/f6f7b348d605bfb.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/1/0430/4958/2743/files/waxemefijilibajepuzuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3401/0015/files/mega_punch_or_mega_kick.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/pukoso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/1404/9191/files/psychiatric_dictionary_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4839/3112/files/vukagajunizitewom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7176/6677/files/butudodabidariruwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/51416023147.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/76640573288.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2860/3295/files/lovikagupoferepuzo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7870/4536/files/sonic_the_hedgehog_rom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4161/1159/files/bharat_ko_jano_2020_book_in_english_download.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 2

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_off000067f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67F6 5664 bytes
SHA-256: bc998a66d1ccd867092551f9d050715ef8a18f57acd93cd439d456ffedd4f5dd
font_01_sfnt_off00007b2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B2C 12692 bytes
SHA-256: f2757a10b0bb14bbf16657fd59ae41f8b17a4441003e1e184c9ea15103d593fb

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