Malicious PDF — malware analysis report

Static analysis result for SHA-256 914937bb1b73203d…

MALICIOUS

PDF

47.7 KB Created: 2020-08-15 19:52:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1f580562ca38a6f7b556c476da6a3f78 SHA-1: b12e0590e26cbdd3faafff885c26b4ecd11d9a59 SHA-256: 914937bb1b73203d26b546ea21fc89e3b0691cf050964c30e2ee10c7c2485b2d
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector link to 'ttraff.ru'. Another critical heuristic indicates a PDF link farm, with many links pointing to Shopify domains, likely for SEO manipulation. The ML classifier strongly flagged this PDF as malicious. The document body contains garbled text but includes the malicious URL and benign-looking PDF titles, suggesting a lure to download further content.

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/wb?keyword=diccionario%20biblico%20pdf%20descargar In PDF document text
    • http://pijamitu.bestsyntheticstore.com/uploads/1/3/0/7/130776677/1334278.pdfIn PDF document text
    • http://betufus.pmhsdavis.com/uploads/1/3/2/6/132681268/bemupujo-jafasebovofe-wajirefiriride.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/1/0429/2280/3366/files/business_writing_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3644/0733/files/tefopanexulepebax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3716/2646/files/29946715931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4069/4684/files/vba_export_to.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4003/8302/files/nakatu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8566/8255/files/44338208947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6143/5813/files/tamowawub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9770/1032/files/fipijaronozav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2847/2220/files/zuvafexobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7800/6437/files/import_to_tampermonkey.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/74832969368.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8948/5221/files/93000315112.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ad5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD5 5168 bytes
SHA-256: 3b0ba1d66bb1e6e26d1fd6d6626e00906e632bd23b4263c18cd394cb63c528b9
font_01_sfnt_off00007c67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C67 11604 bytes
SHA-256: d7e2e53cadbd421992f44173f253d701fb58d0ededf7b0be1f3129217fb36408
font_02_sfnt_off0000a221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA221 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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