Malicious PDF — malware analysis report

Static analysis result for SHA-256 f19fac0ee721eec8…

MALICIOUS

PDF

42.6 KB Created: 2020-08-18 22:22:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1f4fd5e151751d8ffb2dff43f43d8257 SHA-1: 18f71d63a7c25fc8d3edfeb2a1257100962e96ba SHA-256: f19fac0ee721eec8f66f0cf1ec8e5db0aeefc4f796d359bc38d37c128817291f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link redirects to a known malicious infrastructure at ttraff.ru. This suggests a link farm or SEO poisoning attack designed to funnel users to malicious content. The ML classifier strongly supports the malicious verdict. No scripts were extracted, but the presence of a malicious redirector URL is a high-confidence indicator of malicious intent.

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=transformer+voltage+regulator+avr In PDF document text
    • http://files.fiddleheadmarina.com/uploads/1/3/1/4/131409526/zetij.pdfIn PDF document text
    • http://files.enseaadvisory.com/uploads/1/3/0/7/130775402/3b39e35c8c2e64.pdfIn PDF document text
    • http://girapoke.remedyranchrescue.com/uploads/1/3/0/7/130775565/xobazefodenu-kujexi-vomimuridoxut.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/1/0428/8099/1388/files/98557343013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/70202919446.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0189/6347/files/the_candy_shop_war_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/3400/4891/files/79597856483.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2561/3468/files/91925926282.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3501/7884/files/nubaver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0313/4627/files/palubupinotidugifewosiza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/49977522550.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9159/7214/files/kafutewizolafanofavudidav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4423/9510/files/24352901466.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 6

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_off00005c0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C0D 4932 bytes
SHA-256: 21be1ae68ffe459d93361debd1aeb53adcc43b535761487af94a3f821c896487
font_01_sfnt_off00006cc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC1 10220 bytes
SHA-256: 7a9d84448ebde86bace1ed966c275b26e70cb8bc5959c4945d97a32dc08e0bdf
font_02_sfnt_off00008fa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FA5 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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