Malicious PDF — malware analysis report

Static analysis result for SHA-256 271fd7a86480b5d6…

MALICIOUS

PDF

53.0 KB Created: 2020-08-03 13:11:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e4fcdce5c5dcba1d6ea0cc3f5501cbe6 SHA-1: 292fc55da90a9d20898f045df4f2bcc8e495fc70 SHA-256: 271fd7a86480b5d6e70d37112e3b19567ac591c184c62ccf6a85c233d3a712d6
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, disguised as a link to educational material. This redirector likely leads to a malicious payload. The PDF also hosts a large number of other PDF links, many on Shopify domains, suggesting a link farm or distribution network. The ML classifier strongly indicates maliciousness.

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.cc/pify?keyword=add+and+subtract+fractions+worksheets+pdf In PDF document text
    • http://files.greenvillewesley.org/uploads/1/3/0/7/130775959/9201430.pdfIn PDF document text
    • http://files.thesolidrockndchurch.org/uploads/1/3/1/4/131484133/8689168.pdfIn PDF document text
    • http://files.tarrellrodneycampbell.com/uploads/1/3/1/0/131071114/pivifepeda_kuxaj_natuka.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/1/0437/9957/6733/files/xosadorarazerududam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6856/3351/files/46862545667.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8252/2528/files/gatapozalubosajinafofeso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8267/8433/files/89750731232.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7341/4055/files/gitewupibovotabinuxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8472/6943/files/xoxes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7850/6904/files/diposemopebiboridaludozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/5578033559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5071/9642/files/fasezup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4595/1400/files/61496848215.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007d63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D63 5496 bytes
SHA-256: e883d85518170379ac1268b700e75626598453d90193a1eb8769cabe7b30b6ae
font_01_sfnt_off00009020.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9020 9676 bytes
SHA-256: bdbcfb42834efbe1edcb2d1774d9bec90cc45af8169d353323385410d3928941
font_02_sfnt_off0000b17b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB17B 16116 bytes
SHA-256: 4a83d890a47edb08c66ed977e452dfc2aca54227ac21f6fa21ed0d0aaea40951

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