Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b3cbc4b71ef39b4…

MALICIOUS

PDF

48.0 KB Created: 2020-08-19 00:13:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e075cd6a419ca1ca9896a56a2bfbc46d SHA-1: ac9c11b1feee86f5b57a7d499643443557aa0f74 SHA-256: 9b3cbc4b71ef39b4272853d8a3d42d5a4f0f97b358d99accc7de52568db2875e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.cc, which is used to obscure the ultimate destination. The document body, though heavily obfuscated, contains the same URL. The ML classifier strongly indicates maliciousness. The PDF also contains a large number of external links, many hosted on Shopify, which is characteristic of SEO link farms used for traffic redirection or phishing.

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=navigation+using+google+maps+android+api+tutorial In PDF document text
    • http://files.nsportsreccenter.com/uploads/1/3/0/8/130874458/97c29832f51a28a.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
    • https://cdn.shopify.com/s/files/1/0437/3151/7592/files/87043211065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7703/3372/files/94257722078.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3548/2529/files/arduino_micro_pro_datasheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4266/8698/files/dabinerepinoxako.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5381/6728/files/74897836200.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7577/1304/files/90161964346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9222/9787/files/gasiligito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9179/6902/files/darrell_sheets_instagram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1372/6631/files/fiberosajo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4250/3832/files/rinenizot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4518/9794/files/epidemiologia_basica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8348/0736/files/kejabadotade.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 1

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_off00007021.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7021 5192 bytes
SHA-256: 09ff9e37af4329117f5fa3e7bb1badc87fd1be9985da57996c968c36749c55db
font_01_sfnt_off000081b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81B6 10196 bytes
SHA-256: 9f3ecb6ef909ef317cce1aeb09e09a05abdd50ba78e44f01acbf1cd70466f3b0
font_02_sfnt_off0000a4a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4A7 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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