Malicious PDF — malware analysis report

Static analysis result for SHA-256 facb1de32c18e189…

MALICIOUS

PDF

70.3 KB Created: 2020-08-08 06:00:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9d3ebcd67e03d1713bf798f7c1b56c11 SHA-1: fe8419ed5f89c14e4d9661d99c215946e3e598f1 SHA-256: facb1de32c18e1898e364a696591290f14fc16fe5a8ccfd84db09bca90c8dcbf
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to external PDF files hosted on Shopify. One critical heuristic firing indicates a malicious redirector link to 'ttraff.ru'. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=antonin+artaud+biografia+pdf', suggesting a lure to a biography-related PDF that redirects to malicious infrastructure.

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=antonin+artaud+biografia+pdf In PDF document text
    • http://files.bookhivebeerclub.com/uploads/1/3/0/9/130969910/f65beae6b726.pdfIn PDF document text
    • http://files.maureenriley.org/uploads/1/3/1/6/131607054/bunudimiwa-zojiba-ruxuk.pdfIn PDF document text
    • http://tipinele.wilsonceramicknives.com/uploads/1/3/1/8/131857315/zejererufimaf.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/1/0432/9147/6133/files/how_to_reset_photoshop_trial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6372/0613/files/calendario_lunar_abril_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9806/2501/files/vibopujurugeto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5955/8053/files/kosiguvapuselokuwizirowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6209/8085/files/jemilojiwasak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3884/2779/files/rozogoratujanadifulev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4186/5375/files/81848133071.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0058/5636/files/68963581387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0457/5387/files/21891919551.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4673/9866/files/jopojodoxasukukoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4537/0528/files/70580671500.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 8

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_off0000ca28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA28 4892 bytes
SHA-256: 9993fe8f67d54e5dd19a8242682bcd3443e67c07f0ec331335bac796ce58607b
font_01_sfnt_off0000dac7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAC7 10500 bytes
SHA-256: d337e1a2be31124be0764b180a638f3aa3cb87fafe858380474f7af256e4f3ca
font_02_sfnt_off0000fe4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE4A 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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