Malicious PDF — malware analysis report

Static analysis result for SHA-256 21a2307c4bd318ce…

MALICIOUS

PDF

50.0 KB Created: 2020-08-26 17:47:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8266b7ae9d7d4d0d75ae9c9157e9509b SHA-1: 9aee73ceaf6d7bfb161f4d58d7b9f21f37492ccd SHA-256: 21a2307c4bd318ce7b41a3619cddd32e6135a306bc172615add23c159b6a4de7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. Additionally, it exhibits characteristics of a PDF link farm, embedding a large number of external links, many of which are hosted on Shopify. The document body, though heavily obfuscated, contains the malicious URL and references to wkhtmltopdf, suggesting it was generated programmatically to host these links. The primary intent appears to be directing users to malicious infrastructure.

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.com/pify?keyword=bob+henson+the+thinking+person%2527s+guide+to+climate+change In PDF document text
    • http://ginopaf.livingbalancedesigns.com.au/uploads/1/3/0/8/130814328/b3207ed0a220ea2.pdfIn PDF document text
    • http://fadez.maggiegreenwayart.com/uploads/1/3/1/4/131438003/2076b.pdfIn PDF document text
    • http://leloke.boxerhaven.net/uploads/1/3/0/7/130775478/xefagefag.pdfIn PDF document text
    • http://lizevabof.katyschutte.co.uk/uploads/1/3/2/8/132814097/97906f548.pdfIn PDF document text
    • http://files.nyewoodperformanceponystud.com/uploads/1/3/1/0/131070195/lezizu_tevuwunagidamuw_fakexemunise.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/1/0440/5064/5157/files/alleluia_magnificat_partition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0506/7943/files/xesopovisapasuwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/5162/9974/files/bagimu_negeri_mp4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/3164/5608/files/dieta_keto_menu_semanal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/6501/1352/files/june_calendar_printable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4527/3251/files/analysis_of_algorithms_mcconnell.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4388/9052/files/78326693747.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5911/7206/files/6779982738.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9875/0629/files/pilovoboluribarowixazozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mojijemorewowasimagaxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6106/7428/files/best_editor_alternative_to_acrobat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3902/2485/files/duzotanevebinepasimaje.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F82 5772 bytes
SHA-256: 6da71f03c55e7d9e3de5b324adbd0f74abed121fa096efa860d76fe6d01f200a
font_01_sfnt_off000082fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82FA 10060 bytes
SHA-256: af41ab77fe853d5360a26cc5d493a8305b22e6aee7b0c80a5c9c8671864aa118
font_02_sfnt_off0000a594.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA594 16092 bytes
SHA-256: 9af6fc3bf9d751f70540aea0fa47faa159a3604992cda23d2adcda3ffc5346b2