Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c3912860253719f…

MALICIOUS

PDF

38.3 KB Created: 2020-08-15 03:41:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8d99f17eef2dc4c24883cbd20724f3a7 SHA-1: 690647cfb2366dd84a3a99d44ba692cb814863fb SHA-256: 7c3912860253719f5a41f5da6f83fe7b276790c64badeba73e7388adbbbbbaf7
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 a phishing or scam attempt. The document body, though heavily obfuscated, contains the redirector URL and references to a 'size guide', suggesting a lure. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple external links points to an attempt to drive traffic to potentially harmful sites.

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=lorna+jane+size+guide In PDF document text
    • http://files.literaturehouse910.com/uploads/1/3/2/7/132740930/lufomonu.pdfIn PDF document text
    • http://fugonejus.albacomposition.com/uploads/1/3/1/6/131637136/2724058.pdfIn PDF document text
    • http://butal.matildameadescubittdesign.net/uploads/1/3/1/3/131384169/lufazoda.pdfIn PDF document text
    • http://zalidifit.showyouwhatsreal.com/uploads/1/3/1/8/131857445/fopasago.pdfIn PDF document text
    • http://bakonowo.mrksmathhelp.com/uploads/1/3/1/4/131453495/08e72b9f103a777.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/1/0432/0762/2817/files/wurur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6057/5912/files/xenowowisikekonupuxokaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8929/7568/files/ielts_vocabulary_words.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0821/9547/files/alimentacion_enteral_por_gastrostomia_y_yeyunostomia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7179/0494/files/difference_between_double_and_float.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nubizasijimowedemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8914/9608/files/19353664614.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2214/8003/files/one_day_in_the_life_of_ivan_denisovich_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/nopalunawikosomuneru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0722/9597/files/52893047164.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8804/4447/files/guxefolug.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 3

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_off00004c37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C37 4828 bytes
SHA-256: 2fb79995abc696f0ffd65cd0af476f5d3965a454a07bef9b7e6f4ce912d81897
font_01_sfnt_off00005cad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CAD 9876 bytes
SHA-256: 52bcaa34d3dca49b7cc011bd5c827a6525a9d977206192d3c55b210bd838ff32
font_02_sfnt_off00007e82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E82 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

Open this report in the interactive analyzer, or submit your own file for analysis.