Malicious PDF — malware analysis report

Static analysis result for SHA-256 613df5eb60707055…

MALICIOUS

PDF

51.5 KB Created: 2020-08-09 05:43:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2dcfadd9cbc179fcbab3146f59cca70c SHA-1: 5e8d529e3108d1fe4974ea5b191557733d7acb14 SHA-256: 613df5eb6070705513f3b4270cf6d97dfce934091698bbc16347b5551372c535
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing attempt. The primary redirector URL is associated with malicious activity. The document body, though heavily obfuscated, contains the same redirector URL and references to Shopify PDFs, indicating a lure for free downloads that likely leads to malicious content.

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=alcohols+phenols+and+ethers+mcqs+pdf In PDF document text
    • http://files.alexandreotti.com/uploads/1/3/2/3/132302907/wunux.pdfIn PDF document text
    • http://files.bombexnovelties.com/uploads/1/3/2/7/132740337/b7a286225d93f25.pdfIn PDF document text
    • http://files.jessicaleighwellbeing.com/uploads/1/3/1/4/131406275/a1368e4f6cf718.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/1/0430/9087/0423/files/seladabuxibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1434/8197/files/45611758409.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0087/9510/files/saridufen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8941/2767/files/rojijugovarul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1629/7368/files/29164160464.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2995/4721/files/47263262940.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6752/3743/files/18343199740.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2214/8003/files/24574886654.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/4797/1990/files/danny_phantom_season_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4209/2694/files/5743791217.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mirizopenifipometetotagoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3482/7162/files/complete_scales_and_arpeggios_for_piano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8421/8521/files/mirufupepaz.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off00006d73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D73 5508 bytes
SHA-256: 889ff55b6105bc113f842c338f6c68e264262f237761790661000647fb8a9288
font_01_sfnt_off00008002.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8002 13520 bytes
SHA-256: f84292e9bd46d6d1262605497334589a903edfa4b1068de0b39c9f5b98b5bda2
font_02_sfnt_off0000ab09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB09 16364 bytes
SHA-256: bcce05ca6db5d8cdfb08e45fd21adc2e6e4d066094484eb1158a28fc209d5eb4

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