Malicious PDF — malware analysis report

Static analysis result for SHA-256 773dee8f8aa09691…

MALICIOUS

PDF

72.8 KB Created: 2020-08-15 18:38:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4ec5740dabf02be5b1b96d6c00d6176e SHA-1: 253ce677139d754fe11de7155f50be97c9959aca SHA-256: 773dee8f8aa09691edbb3d115edd4b2ddfb3c37548e7a5d5ea1cbefe20bc95a5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, ttraff.ru, which is presented with a keyword suggesting movie content to entice clicks. The PDF also contains a large number of external links, many pointing to Shopify-hosted PDFs, indicating a link farm or SEO manipulation tactic. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is part of a phishing or scam campaign.

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/pify?keyword=narasimha+movie+songs In PDF document text
    • http://files.whitewatercottages.com/uploads/1/3/1/8/131856456/kexaxaru-woroji.pdfIn PDF document text
    • http://files.coloradocattlewomen.com/uploads/1/3/1/4/131437123/fedew_sepokasiz_liweli.pdfIn PDF document text
    • http://dadejiv.trevors-trains.com/uploads/1/3/1/3/131379021/witotaloro-viporonafan-dukoruw-mokufe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9492/4694/files/51566557455.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9696/4261/files/82927827507.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6112/4008/files/what_does_ctrl_w_do.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7712/1686/files/john_deere_lx178_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1621/4936/files/53356703050.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1710/8642/files/vsco_full_android_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0778/6651/files/99897755936.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8917/4432/files/kelekugem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7899/1520/files/77210518060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4310/2613/files/37144474034.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7237/1350/files/jejobixenon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/26914517872.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000af23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF23 4804 bytes
SHA-256: 7fd02565f76d173d6804453b21365613e0c26ee9082e3285ca7ffd9b2fa4d6a0
font_01_sfnt_off0000bf45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF45 4356 bytes
SHA-256: c527cf8bbf2e625709c7cb17927dc0c81a3d85e0645fad5c1ead646a8c70d102
font_02_sfnt_off0000ce46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE46 10400 bytes
SHA-256: f526def943671721c8c3bcc2249debb85e192669986e1983e55cc888ab47ee1c
font_03_sfnt_off0000f22d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF22D 16164 bytes
SHA-256: 4bd16c8abd39118228c1571b0005d4eb3b3e943e572fd92a2a80cfcb7b749349
font_04_sfnt_off00010742.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10742 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c