Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a139e0278f4fe09…

MALICIOUS

PDF

49.1 KB Created: 2020-08-03 15:21:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b498c8f5b99e6ced196e688a41cc7c75 SHA-1: f0a8d33aebb01b62ab249bdc57f0ee1787abee06 SHA-256: 1a139e0278f4fe09861cf94934e5e1654072b728348c756f3cb1b18671bcddd8
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=multivariate+analysis+using+spss+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The presence of a large number of external PDF links, many hosted on shopify.com, suggests a link farm or SEO poisoning tactic to improve search engine visibility for malicious content. No scripts were extracted, and the document body is heavily obfuscated, but the malicious redirector is a clear 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.cc/pify?keyword=multivariate+analysis+using+spss+pdf In PDF document text
    • http://files.drjuris--office.com/uploads/1/3/1/8/131856158/poxabakuzojutevuwu.pdfIn PDF document text
    • http://files.bbluntsheabutter.shop/uploads/1/3/1/3/131383018/bajof.pdfIn PDF document text
    • http://files.li-xiaolu.com/uploads/1/3/2/6/132681970/2687186.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/1/0428/9835/8432/files/38935964995.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xoperesotojazi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/36283751979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0933/5715/files/malidupilisenibomedetur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6638/2749/files/21366695946.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0069/1868/files/mizuzedepewekabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0886/8001/files/mekekiluruxituzenib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3484/4059/files/linux_mint_wifi_driver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2381/0211/files/spring_turkey_season_2016_ky.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8314/4093/files/warapadawovaleniguj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5549/4806/files/pirusowuluzazo.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_off000075d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75D7 5148 bytes
SHA-256: 68b73ac0f0daa1b6f026a3562d5dcb83f16b8848a3aa6134f4013529d16b06f8
font_01_sfnt_off00008771.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8771 10032 bytes
SHA-256: b86b6bd0bd78d09092c3d5f8791e28038879a326eceee64af1cfbfcd1d40ab7b
font_02_sfnt_off0000a9c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9C0 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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