Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd340ccbce54fab0…

MALICIOUS

PDF

47.7 KB Created: 2020-08-06 16:07:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 67f18a7c0fe5e8de41f1cb6710c21dce SHA-1: a305d5f1479a56f13a130e4e593806d56b2f89b1 SHA-256: dd340ccbce54fab03ca4213752856e8818093cb7e5319586b74546e974669c22
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=inductive+bible+study+guide+pdf'. It also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains text related to 'inductive bible study guide pdf' and the authoring application 'wkhtmltopdf', suggesting a lure to disguise the malicious redirect. No scripts were extracted from this sample.

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=inductive+bible+study+guide+pdf In PDF document text
    • http://files.jdhslibrary.org/uploads/1/3/1/6/131606730/dofajut-mijunonibutaw-folipurafabiw-kukotujujonepi.pdfIn PDF document text
    • http://files.prepstep.biz/uploads/1/3/2/3/132302764/liwupadisojix.pdfIn PDF document text
    • http://files.colleengeorges.com/uploads/1/3/1/4/131406473/a921fe6ff3d39.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/1/0431/1898/5370/files/fulasasavosidotaxuvisi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8279/2612/files/castillos_de_hielo_partitura_para_piano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5219/6249/files/17018239435.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7307/7415/files/25630685519.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8095/8617/files/23881026512.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8267/0485/files/mativirudujesesa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8990/3259/files/wisejapuvatilafetutinifun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0390/3127/files/cardenolides_and_bufadienolides.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4575/6833/files/43472821220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0058/5636/files/bobakirij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9203/4211/files/zasirasirunes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6295/1062/files/strategy_business_magazine_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6383/6834/files/57304542315.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2373/6725/files/53369750092.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E55 5028 bytes
SHA-256: e2f14f5f57092dbb5963d8e5d3a37ac1b38a5568bdc37c1e5e0984c30f3c5266
font_01_sfnt_off00007f89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F89 10424 bytes
SHA-256: 91477f18c5f3d1fad10d17cf96cc82e79b0be14d9ed215c6ca4aef19a9fdee62
font_02_sfnt_off0000a327.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA327 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176