Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c530b14c8389c09…

MALICIOUS

PDF

44.8 KB Created: 2020-08-14 01:59:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a4330f1037beb93a2f9a651796ae6881 SHA-1: 27d48d18f7a447df802d09dde9d150cce16fe4de SHA-256: 3c530b14c8389c099ffcf26034d85b27a77ed67f037463e98277b882aaf0e8e0
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that leads to a link farm of other PDFs, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics. The embedded URL in the document body, 'https://ttraff.ru/pify?keyword=running+form+to+prevent+knee+injury', is the primary lure. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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=running+form+to+prevent+knee+injury In PDF document text
    • http://files.advancedcleaningmobiledetail.com/uploads/1/3/0/7/130740517/puveri-xajepize-dosuxa-ratulagoru.pdfIn PDF document text
    • http://gebak.michielwerring.com/uploads/1/3/2/6/132695471/wafijob.pdfIn PDF document text
    • http://files.gypsyroamers.com/uploads/1/3/1/6/131606491/jetipitulo.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/1/0432/4697/7179/files/52195952913.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1370/9725/files/98387605006.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7400/8726/files/16184933889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5351/3893/files/anatomy_of_heart_valves.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8615/9767/files/simanewuroruraboresun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2047/6828/files/saganadefenulikalubeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8065/5775/files/88565628062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5537/3720/files/36865218068.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9949/6351/files/79575489672.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0899/1140/files/burolinupotitif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8938/7939/files/beautiful_disaster_english_google_drive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2180/2404/files/pusofevuse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6547/3184/files/core_java_topics_list.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_off00006638.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6638 4992 bytes
SHA-256: 1c636f1537e6f598d985b47e7f6cd193018e9371ef4c74e520a475210e07d314
font_01_sfnt_off00007738.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7738 9656 bytes
SHA-256: 12cf22a5905b6a2b2f774b3364b8370b7f470aaf361f38a53352098a4972e240
font_02_sfnt_off0000985b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x985B 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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