Malicious PDF — malware analysis report

Static analysis result for SHA-256 14a2ef4c471bdba9…

MALICIOUS

PDF

69.5 KB Created: 2021-03-07 09:58:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 0f69dfd972c5030de7046b24ca2b0ecc SHA-1: c98651ecbd650db34be5ad1d5d1ec71ff9d33483 SHA-256: 14a2ef4c471bdba9398e3658013f0f7122df0ee28c10c42bd7735a16c1289371
184 Risk Score

Malware Insights

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

This PDF file contains numerous links to external websites, many of which are hosted on disposable domains and appear to be part of a link farm. The primary malicious URL, 'https://yafferge.ru/award?keyword=what+does+son+of+god+mean+in+the+bible', is identified as a known malicious redirector. The document's structure and the presence of these links suggest a phishing or scam attempt, likely using the biblical query as a lure to direct users to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://yafferge.ru/award?keyword=what+does+son+of+god+mean+in+the+bible In PDF document text
    • https://cdn-cms.f-static.net/uploads/4472788/normal_600b90d8c47fb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455901/normal_5fe1b0ff831c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465003/normal_60223ca10e8c6.pdfIn PDF document text
    • http://dusejetiwogodad.getenjoyment.net/penny_stocks_to_watch_motley_fool.pdfIn PDF document text
    • http://xuvaxujogilo.mygamesonline.org/67066950683.pdfIn PDF document text
    • https://piluzixalevuj.weebly.com/uploads/1/3/5/3/135345731/2316523.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369659/normal_5fdbd9c8263a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464996/normal_603506a4a9e9d.pdfIn PDF document text
    • https://loguxofe.weebly.com/uploads/1/3/0/7/130775118/jomowiwe_gotunawilajam.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383295/normal_5feeb80979a04.pdfIn PDF document text
    • https://raxasowofano.weebly.com/uploads/1/3/2/6/132681821/f4462eee0739.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417119/normal_60054a7fee0d8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412174/normal_5ff535a17c07f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wavunot/9615977517.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0715965c-57ae-4e25-b881-46ff450a4997/what_is_gni_per_capita_rank_minus_hdi_rank.pdfIn PDF document text
    • https://s3.amazonaws.com/dorulusof/grade_1_subtraction_worksheets_with_pictures.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ed489a4-5b63-4234-9e42-bdd9c42dc45f/58019609672.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f45150da-31c9-402d-bdc2-0c4fd173f2c7/maths_basic_skills_worksheets_answers.pdfIn PDF document text
    • http://bodirinukamole.onlinewebshop.net/2012_dodge_avenger_abs_light_on.pdfIn PDF document text
    • https://s3.amazonaws.com/potofaw/kuxikovurawafalez.pdfIn PDF document text
    • http://widepidaba.atwebpages.com/10588348917.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/025c4677-ccdd-4378-b1d1-a32263c156a3/47444638313.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/dawn_of_titans_apk_latest_version.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_off0000c7ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7EC 3312 bytes
SHA-256: 707f044220626673030db1e929683b7e6be6df4515348478205ae719871ec17a
font_01_sfnt_off0000d3ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3CE 5376 bytes
SHA-256: c0c0ceccfc80c5e9431e5f7969c738a9d9787d63d43aa80c7b013fcbd78b41d1
font_02_sfnt_off0000e601.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE601 9980 bytes
SHA-256: 2a9a71253b7001f88fdf973aeb1059cac031281634497fcdb0be5ff4a4eb72bf