Malicious PDF — malware analysis report

Static analysis result for SHA-256 39de40e2738413af…

MALICIOUS

PDF

47.0 KB Created: 2020-08-27 12:54:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 546ce277ad662ee797270d34a81f3986 SHA-1: e181105700dc28f15e25b02273a6d84b781da634 SHA-256: 39de40e2738413af4e8bf216d8ae3e978ab60ac06d5110b60eafe9c396cc7b9f
194 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure via the URL https://ttraff.com/pify?keyword=ct+scanner+reading+answers. The document body, though heavily obfuscated, contains the text "Ct scanner reading answers", suggesting a lure to trick users into clicking the malicious link.

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=ct+scanner+reading+answers In PDF document text
    • http://mizoral.rugbysafetynetwork.org/uploads/1/3/2/8/132814930/gelukorevopapuwujila.pdfIn PDF document text
    • http://files.ross-gash.com/uploads/1/3/1/4/131453267/9373665.pdfIn PDF document text
    • http://files.geo-mac.com/uploads/1/3/2/6/132680922/bulibi.pdfIn PDF document text
    • http://files.shadowofadancer.com/uploads/1/3/0/7/130775126/854c04085894.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/1/0437/4344/5141/files/sixunijune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4173/4311/files/road_cycling_training_program.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7278/2489/files/differential_calculus_all_formula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6524/3803/files/wizazibapekoziw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/2993/7566/files/audacity_app_for_android_phone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/lediwipamovavixaxej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4424/1562/files/convert_to_word_acrobat_9.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6455/5680/files/spreadsheet_compare_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6277/1366/files/jafav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5696/2465/files/classical_mechanics_taylor_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6007/5427/files/wavodidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1588/9305/files/97063210063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5660/4070/files/fomanijunebav.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 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000079b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79B5 5072 bytes
SHA-256: ee91c470a961fab7093d9476d349b90b0570060736b5eabb40d5a5f3d7153572
font_01_sfnt_off00008b0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B0B 10436 bytes
SHA-256: c4f70fb9feb662499ed2f2a0190c95d9cdfc54e689567f27495e9f7519e42eff

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