Malicious PDF — malware analysis report

Static analysis result for SHA-256 d42840902e4ad60c…

MALICIOUS

PDF

50.5 KB Created: 2020-08-18 20:00:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d514d1072e74f94e718c135581aff13e SHA-1: adf7bac25bb17cf86b6e0df23555070ecaed8eee SHA-256: d42840902e4ad60cf1d7af1c987a34f661c7486a707136c95dfd0d7da73a56f9
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.com, disguised with a search query for 'marriage anniversary cake pics'. It also hosts a large number of other PDF files, likely for SEO manipulation to improve the ranking of the malicious link. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted, but the primary attack vector is the embedded malicious URL.

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=marriage+anniversary+cake+pics In PDF document text
    • http://files.manilaaudioclub.com/uploads/1/3/1/1/131164476/ccdfc2ba0aca.pdfIn PDF document text
    • http://files.crystalwands.net/uploads/1/3/0/9/130969151/naliniwukosexovu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6612/2662/files/ssc_mts_admit_card_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7573/9560/files/59005494071.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2808/5912/files/kisojepawaxuguzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9381/1619/files/70374252628.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0326/3650/files/angle_between_two_vectors_calculator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1624/0807/files/pangu_ios_9._2._1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8461/1733/files/14220422240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5652/9565/files/38714593061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5348/2137/files/2014_bmw_x1_sdrive28i_owners_manual.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 2

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DCE 4896 bytes
SHA-256: 27e9944655e2a45f79e1b8d3cc5f965abf8151208b60716f50e614552ea7d475
font_01_sfnt_off00007e89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E89 9896 bytes
SHA-256: 7662c7a7ebcaadb7bc7a8f496555b99ec0eee9e090e1eea3b8098a8a061b4eab
font_02_sfnt_off0000a008.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA008 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
font_03_sfnt_off0000ae0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE0A 3812 bytes
SHA-256: 01c8aba6986969da95800fdcca6c1004663eb56113b35290e852675e4c82b08e

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