Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebde6e17a7b3c65a…

MALICIOUS

PDF

89.6 KB Created: 2021-03-06 02:52:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: b217fe3cdbaf61b67d0bb94a961fc024 SHA-1: 8a264e399c3045a560a49b2efc530e85f1ee77ac SHA-256: ebde6e17a7b3c65ac2f908f1c28a54551ee536cf001959180dadb7a6cb68edee
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO poisoning tactic. The primary external URI points to a URL containing 'reverse mortgage attorney colorado', indicating a lure to attract users searching for legal services. ClamAV and ML heuristics confirm the malicious nature of the PDF, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://maypoin.ru/wix?keyword=reverse+mortgage+attorney+colorado PDF link annotation
    • https://cdn.sqhk.co/toxodimina/XgcQ6ia/rasomefagozejewabesut.pdfIn PDF document text
    • https://wavuzujez.weebly.com/uploads/1/3/1/4/131406867/c8fda39a5db57b.pdfIn PDF document text
    • http://tulavesew.getenjoyment.net/jivobab.pdfIn PDF document text
    • https://dunogijejuj.weebly.com/uploads/1/3/0/8/130813547/715e46ac8f3.pdfIn PDF document text
    • https://kodikitowi.weebly.com/uploads/1/3/4/7/134768405/xarezazixereji-wutonuw.pdfIn PDF document text
    • https://farunigi.weebly.com/uploads/1/3/4/7/134716297/rosupesawom-xuxoxenode.pdfIn PDF document text
    • http://xitabijasava.getenjoyment.net/50073580521.pdfIn PDF document text
    • http://piriveva.scienceontheweb.net/winnie_the_pooh_complete_30_books_gift_box_collection.pdfIn PDF document text
    • https://vifejekim.weebly.com/uploads/1/3/5/3/135322606/bakawipotura_mefuziras_povozolumafeta_nozeso.pdfIn PDF document text
    • http://xagevogewa.medianewsonline.com/nufadopapenakowigoles.pdfIn PDF document text
    • https://cdn.sqhk.co/nalujujoso/Wicifjd/91753581479.pdfIn PDF document text
    • https://biziliwedurukax.weebly.com/uploads/1/3/4/8/134889104/3678647.pdfIn PDF document text
    • https://liwarelavoz.weebly.com/uploads/1/3/5/3/135398493/zokeb_terimarida_liwox.pdfIn PDF document text
    • https://bozobamawokoruv.weebly.com/uploads/1/3/4/3/134350924/1061090.pdfIn PDF document text
    • https://cdn.sqhk.co/seponidozit/agfjdvR/zombie_apocalypse_game_unblocked_6969.pdfIn PDF document text
    • https://murexaxinafol.weebly.com/uploads/1/3/4/4/134456221/tibajolewevubet-vawukule.pdfIn PDF document text
    • https://cdn.sqhk.co/vifejoneses/jcugiEg/51006755628.pdfIn PDF document text
    • http://zitugaxusi.mygamesonline.org/yamaha_rx-a1040_review.pdfIn PDF document text
    • https://giwuvapelefawi.weebly.com/uploads/1/3/4/8/134869604/lumigogusenimitew.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://faleferesevo.onlinewebshop.net/visojok.pdfIn PDF document text
    • https://df4002df-ed14-466c-b758-10ced248c840.filesusr.com/ugd/3b03e6_b326830140594be398958dc1e1a03751.pdf?index=trueIn PDF document text
    • http://petojijoxura.onlinewebshop.net/how_to_use_a_pickett_microline_120_slide_rule.pdfIn PDF document text
    • https://1c92f6d8-19eb-429c-9239-1cf6be91372f.filesusr.com/ugd/cc1a03_08ce1519b781442bb2fe7c6a5a26143c.pdf?index=trueIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12227 5428 bytes
SHA-256: 61346d84112359ed72862cbd89338bfd6c37ed00bda8fb566e395ae7757523b3
font_01_sfnt_off00013494.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13494 10672 bytes
SHA-256: ee581f74e328f9a44f154226aba7b08b2c183ebc1dc22ed4e1596ffce0fcd27c