Malicious PDF — malware analysis report

Static analysis result for SHA-256 e624a57cb7a5e8ab…

MALICIOUS

PDF

52.2 KB Created: 2020-08-02 11:09:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: afe9852fd75d452f56bed8a351c4c5b9 SHA-1: 2dd85a55f228b533bb07008bb74c981970a47511 SHA-256: e624a57cb7a5e8abf18e05c853bac96f956b229cf7da5a0031cdfce1cdc182e8
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The ML classifier also strongly flagged this PDF as malicious. The presence of a link farm suggests an attempt to manipulate search engine results or distribute further malicious content, with the primary malicious URL being a clear indicator of harmful intent.

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.com/pify?keyword=road+warrior+modded+apk In PDF document text
    • http://files.goodchoicedogtraining.net/uploads/1/3/1/3/131379830/7487867.pdfIn PDF document text
    • http://files.itespto.com/uploads/1/3/1/8/131857782/jebikiriz.pdfIn PDF document text
    • http://files.ghostinspectors.com/uploads/1/3/0/8/130813448/fegadovi-mobijubobijakap-regamofopin-bawemutaza.pdfIn PDF document text
    • http://files.burntchef.com/uploads/1/3/1/4/131406977/vorenuxusudu.pdfIn PDF document text
    • http://files.diananeebe.com/uploads/1/3/2/7/132740515/wejimukeluwav-dojulujugira.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/1/0434/3031/4133/files/vomefomuwenixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7777/1164/files/sulazulo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/1268200325.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0124/2022/files/19954077078.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1800/2340/files/pirase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8524/2276/files/voguvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5336/7975/files/28099546275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5905/2706/files/mikuwimozomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0115/1651/files/nodukokomajiwuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1104/7575/files/ftb_academy_mod_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6129/6790/files/javascript_while_loop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3538/6265/files/26481180657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/36402054751.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006243.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6243 2880 bytes
SHA-256: b90b109c34db9b2d961be312c0c64f13ba4f5af9c83d6ae4556a72cb7f468167
font_01_sfnt_off00006c81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C81 5056 bytes
SHA-256: 91636f1bd4af43fb601686f9a2972876c87b49f92bc44537fffc773a91895da9
font_02_sfnt_off00007db6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DB6 15296 bytes
SHA-256: deea531c34f0f1ee7107b413edd719e2c1c9a1432554ae48a127be7b433c2395
font_03_sfnt_off0000ad36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD36 16368 bytes
SHA-256: 1da804b4add768a804dbbfbbbb747ec6be5e0775a75c76a068ae363ca5450c73