Malicious PDF — malware analysis report

Static analysis result for SHA-256 65ee03cb837e0b5c…

MALICIOUS

PDF

59.0 KB Created: 2020-08-23 19:13:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b53d1ed355141eb8bc6665e71e41b86b SHA-1: eb5da080a83f6fdfdbb835cb11e0d36db3df3d07 SHA-256: 65ee03cb837e0b5cd8ce7e0b08b597dc5ea7ffa2d9465c1d52bdfaee3b5b71e7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm and a redirector URL, indicating an attempt to lead users to malicious content. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM strongly suggest this is a phishing or scam attempt. The embedded URLs, particularly the redirector, are the primary indicators of malicious activity.

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=sound+of+silence+pentatonix In PDF document text
    • http://files.eguastella.com/uploads/1/3/2/6/132682282/4291642.pdfIn PDF document text
    • http://gamivuziv.twistedtreeyogaroom.com/uploads/1/3/2/8/132814930/bogoli-ribil-vekigazejuvakif-wanusutekipa.pdfIn PDF document text
    • http://files.vnecessities.com/uploads/1/3/1/3/131384679/dudebujapama-zajaxikuxoge-berulosilepexo-wodidojefo.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/1/0438/9024/5787/files/vifam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1455/3763/files/15631019809.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5752/1574/files/banafubujuwusewuwila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5729/9099/files/bukhari_sharif_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1356/0727/files/acme_thread_pitch_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/wozipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7755/6629/files/57644215143.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6213/1878/files/38963740351.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2970/6390/files/definicion_de_alimentacion_y_nutricion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mozesuseb.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 5

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_off000050fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50FC 28180 bytes
SHA-256: 45d062cdf313a15fe9a7d1d1c174bcb8c9d1952a4afb97196053cedc9a51e521
font_01_sfnt_off0000a97d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA97D 5224 bytes
SHA-256: 09f6d731c9b163dd796ee6254dc57e6b487fcce444fcd56ca02017733cdd50ef
font_02_sfnt_off0000bb55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB55 9884 bytes
SHA-256: 6ea7173dbbc04d021109da2765476f7424eb656ecdd1bc4201dcbdb48624b495

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