Malicious PDF — malware analysis report

Static analysis result for SHA-256 14cd47cdd6d8ccf7…

MALICIOUS

PDF

35.6 KB Created: 2020-08-23 03:45:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: acfba1823c92f9c37bd50ea66401235f SHA-1: 7181db32e5ca37963448bfbb30412a0b7c43ca07 SHA-256: 14cd47cdd6d8ccf77570aa5bd4a5218f36865a29282ad3557e15fe21df713d0f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) that is associated with malicious activity. The document body, though heavily obfuscated, contains text suggesting a lure for free vector downloads, which is a common tactic for phishing or malware distribution. The ML classifier strongly indicated maliciousness, and the presence of a malicious redirector link confirms a high likelihood of an attack.

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.ru/pify?keyword=eiffel+tower+sketch+vector+free In PDF document text
    • http://tasin.lyndacward.com/uploads/1/3/1/6/131606027/6415704.pdfIn PDF document text
    • http://sureluw.wnygriplighting.com/uploads/1/3/1/4/131407005/2584c6a46d.pdfIn PDF document text
    • http://files.stuartalexanderdental.com/uploads/1/3/0/7/130740563/zadijobumezafer_zikuxumakigade_jimavim.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/1/0432/8914/9608/files/xegelolodijurawilunad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3695/8106/files/ethyl_acetoacetate_reactions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7520/6294/files/root_external_2_internal_sd_card.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7465/8197/files/87891103688.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6899/5237/files/thyroid_treatment_guidelines_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4854/1079/files/9548497346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3439/5295/files/pizagagolokifafu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6796/3547/files/gewulej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6717/1223/files/tijomuwufemesopif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6178/6262/files/inorganic_chemistry_by_huheey.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8024/4643/files/basic_atomic_structure_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5187/5481/files/english_cebuano_dictionary.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 3

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_off000045d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45D5 4616 bytes
SHA-256: 87eab321d4f0620f086273a78ee6f618549b15d05f04be59a8dfcf893b1ecb1a
font_01_sfnt_off000055b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55B4 8716 bytes
SHA-256: e1f9ef141475c7a954ff2084d86248af222be19e0146abc381f911b30f078d50
font_02_sfnt_off00007369.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7369 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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