Malicious PDF — malware analysis report

Static analysis result for SHA-256 02d37c33cda8d276…

MALICIOUS

PDF

47.0 KB Created: 2020-08-15 08:21:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 74d5fbdabc7f399e97edbf15ec6d3617 SHA-1: ce4b103832f4927b32cba5a83a0e77eda97cbf6d SHA-256: 02d37c33cda8d2768d541d5129742a4218ff7d389f14546d9aea4c073b30a8ee
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to a redirector service (ttraff.com) that is flagged as malicious. The document body text, though obfuscated, includes the phrase 'Number 42 the answer to life' and a URL that appears to be the primary lure. The ML classifier strongly indicates maliciousness, and the presence of a malicious redirector suggests an attempt to lead the user to a harmful site, likely for phishing or malware distribution.

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=number+42+the+answer+to+life In PDF document text
    • http://resuk.harmony-holistic-center.com/uploads/1/3/1/3/131380107/83e82133c3499c.pdfIn PDF document text
    • http://files.missiontriptraining.com/uploads/1/3/0/9/130969300/nawato.pdfIn PDF document text
    • http://files.ikargb.co.uk/uploads/1/3/1/4/131409170/c416f2d8c877.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/1/0430/8267/8439/files/rig_veda_sandhyavandanam_in_kannada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3117/4039/files/forklift_manuals.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7896/7703/files/riwewibejijovokales.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6719/6063/files/zikiruduvinise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4782/1205/files/43487457958.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4117/5190/files/lirox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/90686770627.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8996/1884/files/49786675864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/dewajofuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8283/3308/files/fefenadomuroziwuse.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_off00007a35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A35 5428 bytes
SHA-256: b58ea9bd10788f70ff2e3f89691fcd70d122da822c988645918e344a61a57b80
font_01_sfnt_off00008c9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C9B 10192 bytes
SHA-256: 55e849004074be546be29c64b9696c363ef61e0b0678e7f4d5f35b5dcdc88de2

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