Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c30aa7541ea1196…

MALICIOUS

PDF

54.8 KB Created: 2020-08-14 19:08:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0041e8c21bbda15b9c6496006b8275d2 SHA-1: 63e79d3eeb8fa86cfbdf7bd1bfb50f06d27024d3 SHA-256: 7c30aa7541ea119627c4177ff1ffb8e5db40df45b61455c944fc9b74b7ab4310
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that point to a known malicious redirector infrastructure, specifically 'ttraff.ru'. The document body, though obfuscated, contains text that appears to be a lure for an 'Arkestra program 2018', suggesting a phishing or social engineering pretext. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating an attempt to distribute malicious content or phish for information.

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.ru/pify?keyword=arkestra+program+2018 In PDF document text
    • http://files.greenchairpictures.com/uploads/1/3/1/4/131453897/modagovum.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3903/8359/files/4810757309.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0936/8476/files/minecraft_ssundee_lucky_blocks.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8949/4177/files/tegunejabemewovudet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/2527/9648/files/pdf_ausfllen_und_speichern_freeware.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9423/5553/files/23729937899.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4212/8550/files/census_2020_application.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4439/7471/files/66732189496.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2470/1847/files/subordinating_conjunctions_worksheet_year_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0646/5947/files/pdf_to_word_mac_free_online.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005906.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5906 5680 bytes
SHA-256: 7a7db42f553b9860b8e5b91daf2ec9d931bf976b0eafc48489be82f1d7d27cab
font_01_sfnt_off00006c46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C46 2116 bytes
SHA-256: 2d35fe1b112251630f6c3e185fb4bf58c6327cea99f60afab3ca0473214b5b30
font_02_sfnt_off00007612.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7612 10016 bytes
SHA-256: 9752e62e08bd20e82d169b91a14f9dc8800d79bfe0c398f542b3734601615b44
font_03_sfnt_off00009895.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9895 17116 bytes
SHA-256: 45743d3500c034dba9adc74f83b3fc9b2ea9cdceeeb052ae47db933c54c3c365
font_04_sfnt_off0000b18b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB18B 8832 bytes
SHA-256: 0cd211fbf3e0418eaf91f996e0bc014bad7a1f86868a919f460f179f733f16e2

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