Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d405568b707be1f…

MALICIOUS

PDF

71.5 KB Created: 2020-08-24 05:14:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b29f43fe01259fea5622f3b22babc7b8 SHA-1: dd111b5549e33a10375b2ccf7260fa7e7be3fe2a SHA-256: 3d405568b707be1f39cf67276010a5bddcc2e6337924b25a544ae1efbc7b40fe
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'plasma membrane and cell transport pdf'. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a phishing or malware distribution site. The PDF structure and link farm suggest a phishing or spam campaign.

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=plasma+membrane+and+cell+transport+pdf In PDF document text
    • http://pofadiva.jwhitneyart.com/uploads/1/3/0/7/130775565/2726583.pdfIn PDF document text
    • http://files.samuelpriven.com/uploads/1/3/1/4/131437676/7214059.pdfIn PDF document text
    • http://files.brandywinevalleyquilters.org/uploads/1/3/1/4/131438353/pufekamukopus.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/1/0430/4797/7114/files/double_digit_multiplication_worksheets_with_grids.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1747/0101/files/8787485960.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2363/6379/files/43076332094.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9544/0040/files/rekukesuleluzalebakulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9763/7535/files/43655384448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8307/1642/files/69918034460.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3070/7356/files/32649725222.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6368/0929/files/sarubemoxevena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3278/8648/files/lasewalurotakiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3587/6776/files/sample_business_report_format.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dbd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBD3 5444 bytes
SHA-256: 436ad58e27341d9b09a3fc43d0d3ab7e066ed76238bb41b8bbbbb58c2e35330c
font_01_sfnt_off0000ee2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE2A 10332 bytes
SHA-256: 92ccc6291191b9967a431f0760b3852e0cd6d4cd30957126aed76c5ffc9e2f17

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