Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe3c65d403163fb5…

MALICIOUS

PDF

55.7 KB Created: 2020-08-10 20:06:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fd9fb3fa945eeba0f93d2b717e0a20fa SHA-1: 11065f2c76b9ef088371b1e2d52cc7e9aa93aa06 SHA-256: fe3c65d403163fb5cfc63917c49a848d909874c28e8202d7a266c1dbfaa1946e
202 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at 'ttraff.ru'. This URL is presented as a download link for 'kiran publication bank po reasoning books pdf free download', indicating a lure to trick users into clicking the link. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic further supports the social engineering aspect of this attack. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=kiran+publication+bank+po+reasoning+books+pdf+free+download In PDF document text
    • http://files.drlouiefrodriguez.com/uploads/1/3/0/7/130740513/1720562.pdfIn PDF document text
    • http://files.makejaxweird.com/uploads/1/3/1/1/131163632/gomefef_sazudalosegiguj_topuzupamifa.pdfIn PDF document text
    • http://files.lukeolson.com/uploads/1/3/1/4/131438541/9548928.pdfIn PDF document text
    • http://files.larryssportsexchange.com/uploads/1/3/0/8/130874128/folerezome.pdfIn PDF document text
    • http://pigitafe.leahmarshphotography.com/uploads/1/3/1/6/131636725/koxukepogusokos-lamututal-gutezejotalum.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3903/8360/files/8865335993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8764/3303/files/billy_mays_here.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0402/5242/files/sociology_of_law_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9881/6160/files/inverse_trigonometry_formula_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7181/3285/files/getejimutivuki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8741/2900/files/39717041616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5253/0845/files/gupuvudozuvu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5253/1869/files/92206752811.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6461/4303/files/95467149674.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7927/0549/files/sesozonaxaxegopoboz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7079/7462/files/tonufajanewimaleleduti.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000764e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x764E 5588 bytes
SHA-256: 1c676e5f9d6e18a3781da1250b66becd9b56f58290763bee75891967b3616d71
font_01_sfnt_off00008958.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8958 11116 bytes
SHA-256: 77532359f1a04431103c232c86357a727409faed815ad1fe683cebc6c5c51d52
font_02_sfnt_off0000adff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADFF 11108 bytes
SHA-256: 7a03de7791dd7c98ff63bd7dff42386767e5e0523ba0b26c4196f60330a29960