Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d256195338e18de…

MALICIOUS

PDF

38.5 KB Created: 2020-08-21 19:14:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ea51ab8d12a0555107eac16e9288eefa SHA-1: 2f7e86493e4b78e6d8482ff047d3f33a5df1b4bc SHA-256: 3d256195338e18de9e0a8b52b276c87bf5ec036077ebcb10d5059d4f1b0c51e2
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. The document body also contains this URL, suggesting it's the primary lure. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm strategy, likely to improve SEO for malicious content or to obscure the true destination. The ML classifier strongly flagged this PDF as malicious.

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=e.+p.+f+full+form In PDF document text
    • http://files.macroleaders.com.au/uploads/1/3/2/3/132302716/7992482.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/1/0435/6187/7665/files/bmi_table_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9647/3749/files/15427197541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3375/4785/files/hands_on_machine_learning_for_algorithmic_trading_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3915/1512/files/77818350333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7310/1214/files/les_contes_d_hoffmann.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3963/8179/files/demadetalidagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6000/2967/files/adventure_time_season_10_episode_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7257/6922/files/1870391246.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5089/1424/files/biologi_sma_11.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7093/7495/files/writing_numbers_in_words_printable_worksheets.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
🗂 Part of campaign: macroleaders.com.au 3 samples

Related samples 3

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_off00005b45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B45 4648 bytes
SHA-256: edcb3e66f87a26a7e967292d4b2026fa606ca74ce1fa596cf1e1180fc9e7c658
font_01_sfnt_off00006b02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B02 10244 bytes
SHA-256: f2b3588b53992ce1c95efe00aaaabde4a798a726c4cb946fb8e8b118cdb13da0

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