Malicious PDF — malware analysis report

Static analysis result for SHA-256 405185d2960a7fee…

MALICIOUS

PDF

57.8 KB Created: 2020-08-12 14:31:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 650b72ebc6edab67df26b96c67d7867c SHA-1: 0626e0beb52a6890ed42a0d6a294a80b0cbb1862 SHA-256: 405185d2960a7fee567f5323e75d8eb80dec9766990312860f5faa3b082856d1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=poston+stewart+catastrophe+theory+pdf'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous embedded links, including one to 'https://cdn.shopify.com/s/files/1/0433/4157/8405/files/kupawalugigebefa.pdf'. The document body, though heavily obfuscated, contains the malicious URL, suggesting an attempt to lure users to a compromised site.

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=poston+stewart+catastrophe+theory+pdf In PDF document text
    • http://files.thewholechildmatters.org/uploads/1/3/2/8/132815123/betoxu.pdfIn PDF document text
    • http://wulelivi.australianboxingmemorabilia.com/uploads/1/3/1/8/131872269/3c55cd.pdfIn PDF document text
    • http://files.allenrobinson.com/uploads/1/3/2/8/132814996/jatatibire-rirodutol-jananakis.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/1/0433/4157/8405/files/kupawalugigebefa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8438/9275/files/tizerirudilomidikufogadir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2457/2835/files/xenaxobenita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4639/5304/files/mukowatigowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6643/3429/files/12539877573.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5946/8701/files/34358883105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4704/2715/files/84083065073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1409/3986/files/centos_7_user_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5500/3286/files/54466883553.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3420/6620/files/falivazonebudeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1008/8360/files/f2_acca_notes_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9979/8166/files/icom_ic-_718_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/8631623254.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009633.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9633 5144 bytes
SHA-256: c14974d4c4decc4a43f0a67c67e20b0eda07bd6edeb26cdc0c8194c845911078
font_01_sfnt_off0000a7b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7B4 10556 bytes
SHA-256: 9c6f49b7189e0f20a91ee220f942457ab6bf58b4da748f7b78af66f296d31544
font_02_sfnt_off0000cbad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBAD 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c