Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdb9600403ee36db…

MALICIOUS

PDF

44.6 KB Created: 2020-07-30 03:36:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 90e1f3ceb38f54a0c83e7e750b0d6001 SHA-1: e83ce115d20d8c92a5778d10a856ff9d19ee7210 SHA-256: bdb9600403ee36db8bf013a4ebc6e2e7eedf978a6d7725321a36333338318b6b
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. Additionally, it features a PDF link farm heuristic, indicating a large number of outbound links, with the first being to 'cdn.shopify.com'. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf and includes a title related to 'literatura concisa alfredo bosi pdf', which is likely a lure. The combination of these factors strongly suggests a phishing or malware distribution attempt.

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=literatura+concisa+alfredo+bosi+pdf In PDF document text
    • http://files.wearehopecommunity.com/uploads/1/3/0/8/130874620/wiwet-kukukuduv-lubapikejikaj-kagupaxagije.pdfIn PDF document text
    • http://files.firefallseffects.com/uploads/1/3/1/3/131379115/4660776.pdfIn PDF document text
    • http://files.robohounds.com/uploads/1/3/1/3/131379712/2d1cd1e.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/1/0438/2287/4781/files/wegaviduzod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9426/8320/files/wusipasezasukijumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4309/4677/files/getakuzuxukedasalite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1312/8871/files/norajas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8131/0101/files/goderufak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5370/3590/files/64568202963.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0316/6370/files/bozorute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1460/1378/files/72521924366.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8134/3900/files/12209013886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5240/8742/files/pajoditobunazokapiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kiragin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9033/7189/files/sapitodokex.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_off00007432.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7432 5112 bytes
SHA-256: 0238637f1275e714e5b2137cacc59c60d74161caea8163157b6d51ceed0120ed
font_01_sfnt_off0000858f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x858F 9260 bytes
SHA-256: 05db8bfceddcc61c8737742c33f975d9398a11b2ff880a9cf9555aeef26697b2

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