Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5b0a23d453d6940…

MALICIOUS

PDF

33.5 KB Created: 2020-08-09 16:58:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9bbc623cc71324d934c75bce894bbb1d SHA-1: c9c333021bfb940a3f6d834534d2a5e240ae7f2a SHA-256: b5b0a23d453d69408321eaba1c2299d68080a277802221ec2f4502294f671575
194 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to domains associated with link farms and redirectors. One such URL, https://ttraff.com/pify?keyword=bartkira+pdf+download, is identified as a malicious redirector. The ML classifier also strongly indicated maliciousness. This suggests the document's primary purpose is to lure users to malicious sites, likely for phishing or to download further malware.

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.com/pify?keyword=bartkira+pdf+download In PDF document text
    • http://files.tucsonderbybrats.com/uploads/1/3/1/4/131438423/9d80143.pdfIn PDF document text
    • http://files.kecns.org/uploads/1/3/1/3/131383750/2ee864.pdfIn PDF document text
    • http://files.blacksheepstrong.com/uploads/1/3/1/6/131606186/5786388.pdfIn PDF document text
    • http://files.mrskatiejohns.com/uploads/1/3/1/8/131857284/jogujaxip.pdfIn PDF document text
    • http://pijuva.theressomethingaboutmaryfulton.com/uploads/1/3/1/6/131607063/8245699.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3078/9800/files/atlanta_criteria_pancreatitis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9255/7462/files/puwinekowotobigaridedeko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5486/6333/files/rewezarudibexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9761/0657/files/dunadojusezij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6539/0757/files/59042437086.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7176/5664/files/nursing_care_plan_for_cellulitis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nunirisolifugonogebivaxez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1850/0765/files/architectural_digest_france_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8212/0357/files/debajutedali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5213/7622/files/94069581289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4315/1272/files/xogumawasimugipawib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4993/4229/files/21960546346.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 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000046b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46B9 5064 bytes
SHA-256: 94bf0eb75ec15565013691d5c22d820d4660166c92f02ee1c3b63d4cf75f476c
font_01_sfnt_off00005818.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5818 9780 bytes
SHA-256: 8b013415b9aecd678f45c5f9c33a77f60d511f838e292328e6c9ecd503a63762

Open this report in the interactive analyzer, or submit your own file for analysis.