Malicious PDF — malware analysis report

Static analysis result for SHA-256 1435ab534e0fb80b…

MALICIOUS

PDF

41.7 KB Created: 2020-08-19 22:42:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 492276f9da600105ab6ca0bb3f4c5d1a SHA-1: 6dcabd1b8e2acd94301e7778018761cc92910cfe SHA-256: 1435ab534e0fb80bb94535c71a0a94799ccd86b7ac44f6dfb9737ff55377a7d2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service, which in turn leads to a link farm of other PDFs. This behavior is indicative of an SEO poisoning or phishing campaign designed to drive traffic to malicious or deceptive content. The ML classifier strongly supports the malicious verdict.

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=kicking+horse+ski+resort+snow+report In PDF document text
    • http://runuza.standrewspaisley.com/uploads/1/3/0/8/130814124/nowarifikigapusore.pdfIn PDF document text
    • http://vobab.bulbsoup.com/uploads/1/3/1/6/131636665/pogif.pdfIn PDF document text
    • http://files.woodbridgelimo.org/uploads/1/3/0/9/130969966/5934810.pdfIn PDF document text
    • http://files.labrescue.com.au/uploads/1/3/0/8/130874474/1829574.pdfIn PDF document text
    • http://files.editingdonewrite.com/uploads/1/3/0/7/130775639/8073120.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0463/1199/7605/files/refonitajax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2549/7250/files/69888282124.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1316/8542/files/gaxexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/24744367994.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0954/0257/files/past_simple_and_past_continuous_activity.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2681/5903/files/39117892188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0706/5760/files/le_spleen_de_paris_analyse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1430/5430/files/87614224821.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000586f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x586F 4868 bytes
SHA-256: bcb82485b1bbd13ee805de05382d267762e59a5fbc3059217d03f1e947f69f59
font_01_sfnt_off000068fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68FA 10172 bytes
SHA-256: 596a4cc9fbf60eaf32e8e926d5a4011032f16074792c1b0724436699bae0fcf9
font_02_sfnt_off00008bd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BD5 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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