Malicious PDF — malware analysis report

Static analysis result for SHA-256 095211a88df3ab07…

MALICIOUS

PDF

75.0 KB Created: 2020-12-28 16:54:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: d73bd05a9bd867a24168fc1e4a4206b0 SHA-1: 17f8f28b793b4db270219b2518637609041c24fa SHA-256: 095211a88df3ab07a9549c0761b08a06ed227734284cbd11e39b41f7359b4e38
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to suspicious or unknown domains, and one is explicitly flagged as a malicious redirector. The document body, though heavily corrupted, contains text related to 'free movie' content, suggesting a lure to entice users to click on these malicious links. The presence of numerous PDF links and the malicious redirector strongly indicate an attempt to lead users to malicious websites for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffine.ru/strik?utm_term=free+movie+on+youtube+2019+full+movies+horror In PDF document text
    • https://xitukuwelup.weebly.com/uploads/1/3/4/3/134340625/acba796e1.pdfIn PDF document text
    • https://pagopejej.weebly.com/uploads/1/3/5/3/135315805/90de763.pdfIn PDF document text
    • https://duzareledibasa.weebly.com/uploads/1/3/4/8/134890493/bipusofabikanaga.pdfIn PDF document text
    • https://bekijarodik.weebly.com/uploads/1/3/4/6/134617997/6686964.pdfIn PDF document text
    • https://pudibodug.weebly.com/uploads/1/3/4/4/134464821/18f3ff.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/40ea612e-92c6-4cb3-a980-8f1f11f7b3ec/10892948550.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/39537121724.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/sifatowebesupodufoxaseg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1cd4742-2c16-4be2-b72c-8b4fc41aadb0/tim_burton_museum_in_las_vegas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d088b5a-7359-4c31-8253-400aa3857bfc/68801135002.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/zubiroxoluwobuxevinoxo.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/important_symbols_in_a_thousand_splendid_suns.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/93765216013.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06d3c614-8204-45c5-911f-0fe1bf70723f/navy_financial_planning_worksheet_2015.pdfIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/pagak.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e76b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE76B 5536 bytes
SHA-256: b51280da61347ff299e900759b952fb679fc95b54f78f66e897af66a32b10a96
font_01_sfnt_off0000fa29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA29 10928 bytes
SHA-256: b20d1425d0f512aa083283150917f652bc2380250468dbd4e43e1ba502fc2b64

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