Malicious PDF — malware analysis report

Static analysis result for SHA-256 d061630a69e5ebdf…

MALICIOUS

PDF

42.2 KB Created: 2020-08-07 15:01:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 968f3e21a054eb35adc984fffd145321 SHA-1: fd3477c4d71db06f2def71403a9a0ad4b484806e SHA-256: d061630a69e5ebdf60c8fb251a2612f378dcfe360885476f6dc261603b37d289
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a primary link pointing to a known malicious redirector. The document body text and embedded links suggest a lure related to converting "Chegg ereader" content to PDF format, likely to trick users into visiting the malicious site. The presence of a mass external PDF link farm further indicates a malicious intent to distribute content or redirect traffic.

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=chegg+ereader+to+pdf In PDF document text
    • http://files.creditrepairsyracuseny.com/uploads/1/3/1/6/131607053/fca2fd9df.pdfIn PDF document text
    • http://fizepol.anodynesurgical.com/uploads/1/3/0/8/130874524/9949746.pdfIn PDF document text
    • http://files.tulipanproductions.com/uploads/1/3/1/3/131381374/subopixadenajinoj.pdfIn PDF document text
    • http://files.stcroixbirth.com/uploads/1/3/1/6/131606408/f32a55.pdfIn PDF document text
    • http://files.ashleys-plate.com/uploads/1/3/1/3/131380995/4580139.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/1/0428/2620/3302/files/fukozutosaregoterorelape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3282/9342/files/65180453943.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7543/6698/files/86842882711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6301/7629/files/ruxatobew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7872/9374/files/ropifurutones.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9048/5150/files/biogeochemical_processes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2977/3982/files/punarixumeziwufawowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8184/3356/files/73867219378.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3191/0821/files/14184571691.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3459/8809/files/15904006116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9484/3293/files/solivoriki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0513/1421/files/color_test_pattern.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5711/8374/files/windows_powershell_commands_list.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 4

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_off00006739.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6739 5000 bytes
SHA-256: 7fddb7787804045de7eb505d03009d7a4beceba203fe88ad946a296223de926e
font_01_sfnt_off00007833.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7833 10444 bytes
SHA-256: 80d697a2039ba852f2322dacbd4760bc9184bebf3b138e3b2bd4d278b3f8add1

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