Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c3e53c1e49299f2…

MALICIOUS

PDF

38.7 KB Created: 2020-08-07 20:26:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c3aa2c324cfc9a07a52bb3fafc10baf5 SHA-1: dbf825536225437659fa1ee17e9c89995bec204f SHA-256: 3c3e53c1e49299f2b0dbd77dfb27386335083d9246643093776d34b1b6215241
202 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link disguised as a 'Manorama calendar 2020 pdf download' lure. It also exhibits characteristics of a PDF SEO link farm, embedding numerous external links, with the primary malicious link pointing to a redirector. The presence of a visual download button further supports the deceptive nature of the document.

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=manorama+calendar+2020+pdf+download In PDF document text
    • http://files.nmffa.org/uploads/1/3/0/9/130969819/deniz.pdfIn PDF document text
    • http://wedotavis.ires-8.com/uploads/1/3/2/7/132710712/tarakoruriso.pdfIn PDF document text
    • http://files.southshoreguttermonkeys.com/uploads/1/3/0/7/130775448/13573.pdfIn PDF document text
    • http://files.farragutrobotics.org/uploads/1/3/0/9/130969485/vefujumopar.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/1/0435/5224/3861/files/gamuziralorenuvuzoboguwez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3006/9927/files/26820657307.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3937/5012/files/dituwiwem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wekisod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6332/8411/files/53343212565.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4946/6526/files/47421758256.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9906/2421/files/varapirugixapixexir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/mepogo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9202/6271/files/7160087702.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4511/7342/files/jutivuketomoxapeliruvu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4326/5434/files/80689572819.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0131/4454/files/rovamijetivesad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6910/3528/files/86712766123.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_off00005900.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5900 5492 bytes
SHA-256: 344030942751af472cc8e70d8591bff0d06b709445dc514f2d03110b3c4ca653
font_01_sfnt_off00006bb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BB7 10084 bytes
SHA-256: c5db49f4ffac2c274669fc91ed85f69abf1d749ca112b4b073949c1165d74961

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