Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a83abd239cb9788…

MALICIOUS

PDF

44.9 KB Created: 2020-08-14 22:54:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 647e792f3660b232633e17df472a38cc SHA-1: 086f3ab7732e9f6c23fb5e078d3e3e4108e7dbc4 SHA-256: 3a83abd239cb9788831a0e9127309c0a3f91dc7e01bb25aceae1e2f0db907798
194 Risk Score

Malware Insights

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

The PDF file contains numerous links, with a critical heuristic identifying it as a link farm designed to redirect users. One of the primary links, 'https://ttraff.com/wb?keyword=jurnal%20organogenesis%20pdf', is flagged as malicious. The document body, though heavily obfuscated, contains this URL, suggesting the intent is to trick users into visiting malicious sites under the guise of accessing a journal PDF.

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/wb?keyword=jurnal%20organogenesis%20pdf In PDF document text
    • http://files.russianguideservice.com/uploads/1/3/2/3/132303170/xikazatuwexutom.pdfIn PDF document text
    • http://files.pinetreechalet.ca/uploads/1/3/1/6/131636654/653e00e.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/1/0440/6280/2085/files/pokal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5380/0859/files/ponikixog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2645/5455/files/53791181917.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8576/5535/files/15955099591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2313/0009/files/30046195755.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1701/1353/files/56993700345.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7510/9013/files/mikewupevijupibo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3290/3833/files/xekolepufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5021/2264/files/winchester_reloading_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7215/0947/files/puccini_o_mio_babbino_caro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/4021/4940/files/accidentally_in_love_piano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1024/3230/files/98539794338.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7945/7173/files/dodurev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0365/7887/files/41380294769.pdfIn PDF document text
    • https://doi.org/10.19027/jai.4.197-204In 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 4

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_off000065ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65EF 5200 bytes
SHA-256: 87ea005f7375bcd882ef8b0654f7a64dd2b53f26f7128fe44551ae1643d0456f
font_01_sfnt_off000077a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77A9 14976 bytes
SHA-256: 288b7ae2a9ce85ccdd28472753688f250ba190e87ca71ea6c797a1ab86c06420

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