Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ea40778f53e6d83…

MALICIOUS

PDF

59.7 KB Created: 2020-08-10 09:05:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1f9177119193e6e211a8742b366a298c SHA-1: bf45c0519a820dfef0aef7c23880918a64493ba5 SHA-256: 9ea40778f53e6d839bebbbd82e2cee79a7436197372b9510f0e31e0a56fa782e
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic indicates that the PDF links to a known malicious redirector infrastructure, specifically 'ttraff.com'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=etiology+of+bronchial+asthma+pdf', suggesting a lure to download a PDF related to bronchial asthma, which then redirects to a malicious site.

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=etiology+of+bronchial+asthma+pdf In PDF document text
    • http://files.localcraft.net/uploads/1/3/1/0/131071315/jokot.pdfIn PDF document text
    • http://files.terrafirmaroasting.com/uploads/1/3/2/6/132682819/36ba9f8be3.pdfIn PDF document text
    • http://files.mandelnewman.com/uploads/1/3/1/3/131379828/gozuv.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/1/0435/8592/9375/files/the_nanny_season_1_episode_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78394199391.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7233/1675/files/82046286505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5064/7202/files/big_ideas_math_algebra_2_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1759/1189/files/arturia_audiofuse_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1490/5256/files/anna_karenina_book_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1020/3556/files/20700242270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5981/4306/files/nikitorovaseripomuxetopo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9066/3832/files/xenumepupurunafatu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/2020_ca_electrical_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8470/7992/files/paxokakajosugob.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_off00009063.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9063 5768 bytes
SHA-256: 63a0d4477a49f2288e84c68778829906f92566975d5d2a790cdec9723c7ebec0
font_01_sfnt_off0000a3ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3EF 12892 bytes
SHA-256: b24eda0e31821466df99119a9c468d30d41d38e2d979e2e83e85c2886243c9f7
font_02_sfnt_off0000ccf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCF7 16132 bytes
SHA-256: d9b012042df5fe8dc074c42eae0f7627b15178249d85eb70dc7afc452d134ec7

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