Malicious PDF — malware analysis report

Static analysis result for SHA-256 445c95255af7df6b…

MALICIOUS

PDF

46.2 KB Created: 2020-08-03 11:44:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3649dca22e9eaa2af41e4499c0bf1d73 SHA-1: db0fd2da8eaf4c75ac6e4f7d6fcbf79903411070 SHA-256: 445c95255af7df6b39a5161687bf5416beefd43348d7834bd0dc3fa3c808747f
194 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, forming a link farm. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=stories+in+spanish+pdf'. The document body, though heavily obfuscated, contains this same URL, suggesting the primary intent is to redirect users to malicious infrastructure via a lure of a 'stories in spanish pdf'.

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=stories+in+spanish+pdf In PDF document text
    • http://files.drivinglessonsrichmond.com/uploads/1/3/2/6/132695200/pofonipo.pdfIn PDF document text
    • http://files.thedepontes.com/uploads/1/3/1/4/131437378/kugidi-fibew-govefemarifobir-tugubunebin.pdfIn PDF document text
    • http://files.dcarroll.org/uploads/1/3/0/9/130969389/cc62b24dd0889e.pdfIn PDF document text
    • http://files.thpulse.com/uploads/1/3/1/8/131856492/b83177e26edd6b.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/1/0431/6105/9482/files/miwez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5272/0543/files/92166972719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2789/8268/files/56725302952.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0453/4692/files/xinuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8735/4270/files/14262774438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4929/5770/files/60613917539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1928/0288/files/suwuniwabatovonefuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2750/4032/files/sapimisutigowamomibovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/gutimavabugikedatudagafin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6271/2734/files/kedetitusawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3127/3365/files/lezerajodivu.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 7

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_off00007796.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7796 5200 bytes
SHA-256: ea61b47cbce94c326c9d4b134d58432af75f7e34b2438e153e19ffdfd177abb8
font_01_sfnt_off0000893d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x893D 10304 bytes
SHA-256: 50cf4d881539ef7e7af1ad08174e434c6cf257e6079441201653644be5978b50

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