Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e5588cd5de7928b…

MALICIOUS

PDF

87.4 KB Created: 2020-12-16 08:27:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: d7676728ab0670aec4e3d6129b2527fa SHA-1: d6f5a54a5d60bb14cde04e4398135a39bf4aac06 SHA-256: 5e5588cd5de7928baa8aa68035900d0657dc309b6a1dcae7a13ea0d7191f7a92
214 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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.
  • 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://ggtraff.ru/strik?utm_term=spectra+replacement+summoners+war In PDF document text
    • https://fetevemukimagon.weebly.com/uploads/1/3/4/8/134896640/cb75f8b9ca866.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366331/normal_5f936af35ebcd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451230/normal_5fbee05244a66.pdfIn PDF document text
    • https://vumifedesonuzik.weebly.com/uploads/1/3/4/8/134849268/1972cfb35dfe.pdfIn PDF document text
    • https://wikabolodaj.weebly.com/uploads/1/3/4/6/134648749/wukajawuvanok.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://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd038bb4c4d833b8be8bab/1606222734418/god_gold_and_glory_meaning_tagalog.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc013fe3398ff751529adbc/t/5fc1422fe18c5c478e2a4f43/1606500918438/bapro_bip_movil.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc12f71be9b6939510c9d41/t/5fcb5efa1df7590d80de84ad/1607163642606/lawijiz.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2bc52c6229360ecb8cfc0/t/5fc58b1c9ee0f32b87118a97/1606781724651/wolfgang_puck_bread_maker_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxomigo/fogigidira.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc57f453398ff75154cec93/t/5fd1185ada1b726b0ef3a3bc/1607538779922/games_like_farms_and_castlestorm.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc11355ab79f442f22aa123/t/5fc1b55ecb3e0f5771900b31/1606530399697/who_best_exemplifies_assimilation_in_a_raisin_in_the_sun.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4f829ee0f32b874a384f/1606373250905/86108652270.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f3af1c8c741314320bf8/t/5fc19a7f645712565478dece/1606523520305/93134082468.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/xitobokobelisibi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3ab40bdb33045eed37d5e/t/5fc69a9f08845d092472e6f5/1606851233241/wijufebix.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc51130ea4a794d565ff698/t/5fca8203944ec9462b3dffb6/1607107076202/hide_and_seek_movie_2019_bride.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_off0000f524.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF524 5108 bytes
SHA-256: 9b8777e9d41514f1cdfae976d8d6e01a6918c0425ef6ac3b8f60731ffd976bda
font_01_sfnt_off00010676.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10676 10728 bytes
SHA-256: 80b463842bdf2fdd336477afc88ea0b0cfde2572d8384fe236e0488091847026
font_02_sfnt_off00012b75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B75 16092 bytes
SHA-256: c9557d91917e40dbb2ce09b7ef560a04a9a832ffe2ebcac6b50408a58351272e
font_03_sfnt_off0001403d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1403D 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71