Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7c38cfb83ab74e2…

MALICIOUS

PDF

72.6 KB Created: 2020-12-25 18:12:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 382ec26128695275f12df075437b1c43 SHA-1: d1c9e3102e524f3622889363e45df2039bbbd675 SHA-256: d7c38cfb83ab74e2d8fbbe14e81f017f265a2aff8195df4f73995a51e73add91
214 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, including a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'Weather live pro apkpure'. The presence of multiple PDF links and a critical heuristic firing for a malicious redirector indicates an attempt to lead the user to malicious content, likely for phishing or malware distribution.

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/123?utm_term=weather+live+pro+apkpure In PDF document text
    • https://cdn-cms.f-static.net/uploads/4503533/normal_5fbb9553b6d71.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462986/normal_5fe4f47551edb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414159/normal_5fe52cd903c31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412758/normal_5fa08ad7bc33f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419235/normal_5f9949c66e1b0.pdfIn PDF document text
    • https://zedafirulatako.weebly.com/uploads/1/3/4/5/134584693/7189232.pdfIn PDF document text
    • https://wenozujilemufo.weebly.com/uploads/1/3/4/4/134456287/bezewowologu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367277/normal_5f8d4cd6c9ba3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421473/normal_5fbc781621fdd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389576/normal_5fb89eb47f3d7.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/dabatisew/nubexeri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc13251c-790b-424b-bb2d-74589e94a214/37547952365.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/5394442676.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_off0000d1bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1BF 4864 bytes
SHA-256: 6fd9efc2585f50a1eafff38bc2ef6939475c9d54e12a01fd244c728b572faf1e
font_01_sfnt_off0000e24d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE24D 3552 bytes
SHA-256: 4ef7647652b1eff73410fa0642f7dd6c965ea11995d32e85848ee221844390ab
font_02_sfnt_off0000efd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFD6 10576 bytes
SHA-256: 8f469b0fa18bc5d80c63164358281d1e42830e80db2cd52a092288bf8fd7200c

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