Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ff17e3a8063a8f9…

MALICIOUS

PDF

46.4 KB Created: 2020-03-15 06:19:29 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-15
MD5: 02499f1009df094eb6bf1420949e3f13 SHA-1: d7398288bacc23ecb2ea888fb40a610679134572 SHA-256: 6ff17e3a8063a8f9fcc9f5a83ae1deae044634be6a616ccd40aee9e57b9aad2b
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to other PDF files, suggesting a link farm or redirection mechanism. The embedded text mentions "drop down box in excel sheet" and the document itself contains numerous URLs, including one that appears to be a lure. The ML classifier strongly indicated maliciousness, and the PDF structure with mass external links is a common tactic for distributing malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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 http://bmajorevents.net/uploads/1/3/0/3/130323552/130323552.html#drop+down+box+in+excel+sheet PDF link annotation
    • http://www.creazionefootballacademy.co.uk/uploads/1/3/0/2/130288421/9157985.pdfIn PDF document text
    • http://www.mjrfloors.com/uploads/1/3/0/5/130588297/dawuzuzozasowog.pdfIn PDF document text
    • http://webmail.aptwy.com/uploads/1/3/0/5/130543029/wedepojilas.pdfIn PDF document text
    • http://rocheleautechnosoft.com/uploads/1/3/0/4/130478259/60c3ead30409e31.pdfIn PDF document text
    • http://dannyderrick.com/uploads/1/3/0/7/130776514/90afef8c9a0f.pdfIn PDF document text
    • http://mytjscatering.com/uploads/1/3/0/2/130289460/bcc1e4b305ee80d.pdfIn PDF document text
    • http://carribianscents.com/uploads/1/3/0/6/130604180/4868683.pdfIn PDF document text
    • http://www.londonbikeservices.co.uk/uploads/1/3/0/5/130544385/bb46f7c.pdfIn PDF document text
    • http://sanguinityllc.com/uploads/1/3/0/4/130483396/8620286.pdfIn PDF document text
    • http://www.excellrc.com/uploads/1/3/1/0/131071277/1527beb8676f.pdfIn PDF document text
    • http://rentinspanishfork.com/uploads/1/3/0/6/130604305/8962093.pdfIn PDF document text
    • http://urbanwinos.com/uploads/1/3/0/6/130639563/1892510d5bd2fe2.pdfIn PDF document text
    • http://essential-video.be/uploads/1/3/0/6/130621838/rafipebijusine.pdfIn PDF document text
    • http://www.refreshmyrv.com/uploads/1/3/0/5/130588591/gedolajuroxas.pdfIn PDF document text
    • http://merryhillweddings.net/uploads/1/3/0/6/130620601/razoxoxewutuse.pdfIn PDF document text
    • http://www.minorityscholars.org/uploads/1/3/0/3/130323298/4950156.pdfIn PDF document text
    • http://thesharpetraveler.com/uploads/1/3/0/2/130270931/gavabosalapatal.pdfIn PDF document text
    • http://denimplusthailand.com/uploads/1/3/0/2/130288430/sopexevejetajeb.pdfIn PDF document text
    • http://booneheritagefestival.com/uploads/1/3/0/4/130476342/xewazenazadasusubut.pdfIn PDF document text
    • http://thewomensdefensenetwork.org/uploads/1/3/0/2/130291996/mutexoba.pdfIn PDF document text
    • http://randomminds.net/uploads/1/3/0/7/130739839/kapib.pdfIn PDF document text
    • http://volnaiskra.com/uploads/1/3/0/5/130589220/6320743.pdfIn PDF document text
    • http://ipoweracademy.com/uploads/1/3/0/8/130814340/sobuka.pdfIn PDF document text
    • http://payola.dadgifts.us/uploads/1/3/0/8/130814460/rowoxuwisoroxinewo.pdfIn PDF document text
    • http://everythingelectronicszone.com/uploads/1/3/0/2/130272286/fd8b37bc16.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 2

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_off0000787d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x787D 7700 bytes
SHA-256: f2bd7f974820e5eb108f00dfca4f1f145c1f76f1e0d6bd991e5f083b63e96f93
font_01_sfnt_off000096ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96AB 16036 bytes
SHA-256: 779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63

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