Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e1e49c3619688c0…

MALICIOUS

PDF

42.2 KB Created: 2020-08-05 01:57:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 57d5ed2cf019cf177f404797d449eecf SHA-1: 777476a0c760fb3ae5b1e5a3df6bc9d759bde6e0 SHA-256: 4e1e49c3619688c09a60209766f72de15cd8f808a63645474dd0c9fea1f2eedf
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting PDF files, suggesting a link farm or SEO poisoning tactic. One critical heuristic identified a link to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text related to PDF barcode generation and the redirector URL, indicating a lure to a malicious site. No scripts were extracted, but the PDF structure and link farm heuristic strongly suggest a malicious redirection attempt.

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=generate+pdf417+barcode+android In PDF document text
    • http://files.backnbalance.org/uploads/1/3/0/8/130814172/8432241.pdfIn PDF document text
    • http://files.simplyessentiallife.com/uploads/1/3/1/4/131483108/6883a2d398516.pdfIn PDF document text
    • http://files.tweedvalleyhapkido.com/uploads/1/3/2/6/132680932/340830.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/1/0431/5178/6135/files/69472129643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0224/7838/files/18728440619.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0933/5715/files/towuxegawozamapudaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2909/3784/files/4532435798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5727/4270/files/3362803533.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6259/9586/files/kotisupubizud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0888/3870/files/vuwoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8929/7568/files/94582740508.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7533/8389/files/lesorawupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0128/2711/files/puvexe.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
🗂 Part of campaign: backnbalance.org 4 samples

Related samples 7

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_off00005ad3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AD3 5120 bytes
SHA-256: fbd61523d07691c7f6fe2d5b59b279258f11c81af0c14d31b22197b985048460
font_01_sfnt_off00006c52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C52 9940 bytes
SHA-256: 76ec6be8c7b9e460c36c153ec2d6c9dc15c2285e76695434ae8129adeeeb84f7
font_02_sfnt_off00008e56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E56 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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