Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d81c8a14a80da45…

MALICIOUS

PDF

44.4 KB Created: 2020-08-18 16:07:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6a5ef2c35fa2862babb60628891622b2 SHA-1: 4ee67f0e1ab8b76528d1d003383a530f1b37e0a2 SHA-256: 2d81c8a14a80da451b3fde1dd219d7d389ee164cb5b8a3c7700bf6a31b9b4972
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to plant identification and references the malicious URL. This suggests a lure to a link farm or phishing site, disguised as a helpful guide. No scripts were extracted, and the primary malicious activity appears to be link-based redirection.

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=pflanzen+bestimmen+blattform In PDF document text
    • http://files.seattlefirstbaptist.org/uploads/1/3/2/3/132303080/81e42db7c9176.pdfIn PDF document text
    • http://files.jfrancoist-shirtsdesigns.com/uploads/1/3/0/7/130775245/3280940.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/1/0429/6785/9359/files/dokozedil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5857/8086/files/tom_clark_gnome_price_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7839/3764/files/splashtop_wired_xdisplay_for_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/2054/6211/files/93505090400.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5039/4019/files/77262708933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3034/7938/files/basojatisufobepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6702/3259/files/61753849369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6758/8252/files/63736825682.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2262/2621/files/70859376100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2506/1272/files/love_chronicles_secrets_revealed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/2451/5989/files/dictionary_english_to_bengali_free_jar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4848/4507/files/90039458158.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3607/2341/files/jimapabagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/didujivafasagedokopu.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_off000066ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66FF 5104 bytes
SHA-256: 81aca06d6e57bb23007a8887e6a5fa07b554729f0ecca8680918d6897cd8464b
font_01_sfnt_off0000784d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x784D 14440 bytes
SHA-256: caf88b9a084d0893c7e95d080ef60a20b8936288ae90dc19e6e4226066e3f866

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