Malicious PDF — malware analysis report

Static analysis result for SHA-256 b13900a443ed3aa8…

MALICIOUS

PDF

43.1 KB Created: 2020-08-06 01:42:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8a315aa4e6ff959bd98a65c078f89595 SHA-1: 80f55357a0af3b566cec76bd2d93e2ea8b35eb07 SHA-256: b13900a443ed3aa88236f2b6a53ca51d62663580a80560f641bd2eaf9d48c00e
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.ru/pify?keyword=cdisc+sdtm+controlled+terminology+pdf', is identified as a malicious redirector. This suggests the document is designed to lead users to malicious infrastructure, likely for further exploitation or credential harvesting. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=cdisc+sdtm+controlled+terminology+pdf In PDF document text
    • http://files.alidonaldson.uk/uploads/1/3/0/8/130873918/d8cfb9d4.pdfIn PDF document text
    • http://files.chsplatinumpress.com/uploads/1/3/1/3/131379776/mofike.pdfIn PDF document text
    • http://files.artandfilmlover.com/uploads/1/3/1/8/131856108/8371125.pdfIn PDF document text
    • http://files.gnosiscanberra.org/uploads/1/3/1/1/131163740/55d447e1804d.pdfIn PDF document text
    • http://files.fabiomanda.com/uploads/1/3/0/7/130739616/04fadd574f022.pdfIn PDF document text
    • https://fairsharing.org/FAIRsharing.szrmevIn 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/1/0428/6034/7551/files/23521345780.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8163/7794/files/fujavoxebofotuzadidinugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5713/6294/files/81512635247.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8512/8090/files/26930686901.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pigirerunozekolufis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0291/9074/files/75128972461.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1351/2100/files/toyota_auris_2020_brochure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7798/2626/files/round_a_float_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7719/7221/files/familia_enterobacteriaceae.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/jofagobuneluraw.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_off00005c4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C4B 5180 bytes
SHA-256: 6fa2884d0a341bc24cc48dc57a636cb4436c7d8785fe39ee43b197b0006a0df5
font_01_sfnt_off00006ddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DDB 10452 bytes
SHA-256: 5677c870e82ddecf7c938e6a31ec274a5d8972328345459149a683ce31b9a5f6
font_02_sfnt_off00009173.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9173 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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