Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcc131bc2855efb1…

MALICIOUS

PDF

79.1 KB Created: 2021-03-16 05:41:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 95caf80522a8c5d55d07fab937e12781 SHA-1: b00decf6a2c383538b1b8183ab40abb5c7c73b0e SHA-256: dcc131bc2855efb105efcac927d5a76829521cf2082a627036dbc7030974d35f
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs pointing to disposable domains, suggesting a link farm or phishing lure. The document body, though heavily obfuscated, contains references to 'award' and 'pdf', aligning with the heuristic findings of external URI usage and link farming.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9174

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://leonvi.ru/award?keyword=athena+and+arachne+pdf PDF link annotation
    • http://xitawefavam.medianewsonline.com/73529405998.pdfIn PDF document text
    • http://safijejog.mygamesonline.org/bogonojumejuburukob.pdfIn PDF document text
    • http://xalowazejadiv.getenjoyment.net/vobivone.pdfIn PDF document text
    • http://liwitesuzemumex.sportsontheweb.net/89986019089.pdfIn PDF document text
    • http://bizifemodefi.mygamesonline.org/45804823849.pdfIn PDF document text
    • http://zumepaposakuf.scienceontheweb.net/tavibunawuse.pdfIn PDF document text
    • http://botavubapisod.mywebcommunity.org/google_chrome_website_als_speichern.pdfIn PDF document text
    • https://cdn.sqhk.co/tasewapimol/evgjYgj/zexatimumemutemajiv.pdfIn PDF document text
    • https://cdn.sqhk.co/bozogekeji/shdiktx/sizoluwaxowazida.pdfIn PDF document text
    • http://wusokamojifel.scienceontheweb.net/54142386750.pdfIn PDF document text
    • http://pressit.space/four_feet_two_sandals_lesson_plangy6p9.pdfIn PDF document text
    • https://cdn.sqhk.co/romafime/pcgKQif/78046175472.pdfIn PDF document text
    • http://dakajak.medianewsonline.com/xaliso.pdfIn PDF document text
    • http://lukufogud.getenjoyment.net/tim_ferriss_jim_collins_show_notes.pdfIn PDF document text
    • http://choosenews.space/gafupiregopewomixinisugod3zcsd.pdfIn PDF document text
    • http://nunopasatipimav.medianewsonline.com/26731082075.pdfIn PDF document text
    • https://cdn.sqhk.co/retagigimusa/XdihigC/moxebisuzukizujane.pdfIn PDF document text
    • http://getveran.site/jubasozopimigamulukscdp.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/a64c8e49-54cb-4c19-99e4-7735b2381b38/tcp_ip_ports_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/143dd5ba-dba9-42be-93c9-f7acf60a1906/54210485175.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e478ef6e-c637-4932-b723-4fad014762ef/14335686799.pdfIn PDF document text
    • http://tiwatimab.atwebpages.com/94104716768.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2908cef-3181-4af0-b1c8-6b2645777bd1/56863956385.pdfIn PDF document text
    • http://rogomore.myartsonline.com/lord_of_the_flies_symbolism_essay.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010048.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10048 5020 bytes
SHA-256: 857d4c0b8af7aca2601a67d2670edf690e69e0e7ef6bf5cf6bb6726f455747d5
font_01_sfnt_off00011159.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11159 12692 bytes
SHA-256: 6b94566288ccb19e8b21e6b68deacb7c97d318fcee5aa00273be26d35d2c5df5

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