Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b282ef9a946ee2d…

MALICIOUS

PDF

89.4 KB Created: 2020-03-23 07:31:47 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-15
MD5: 3bc27981bc249a7f13e9280716e9d68a SHA-1: ae2576a47622d1c8300c25047170dce933f23e19 SHA-256: 1b282ef9a946ee2d91ecff6da16f81b3dd0285a87ebbe25d6a549a78bd7dd868
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, a technique often used for SEO poisoning or to distribute further malicious content. The primary heuristic identified a 'PDF_SEO_LINK_FARM' pointing to 'sunfamily.xyz' and other domains, suggesting a coordinated effort to host numerous PDF files. The document body, though partially corrupted, contains a URL that matches one of the identified external links, reinforcing the link farm attack pattern. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://hkcfoundationforparkinsons.org/uploads/1/3/0/4/130436017/130436017.html#lista+de+verbos+en+presente+simple+y+presente+continuo PDF link annotation
    • http://sunfamily.xyz/uploads/1/3/0/5/130538833/e235f.pdfIn PDF document text
    • http://ingebjrgkrogstad.com/uploads/1/3/0/6/130621392/kurowumepekujaze.pdfIn PDF document text
    • http://hostmaster.sallywoodcock.com/uploads/1/3/0/6/130621730/supipiko.pdfIn PDF document text
    • http://msaimports.com/uploads/1/3/0/8/130815437/fed72c.pdfIn PDF document text
    • http://cretanoliveoilfarm.gr/uploads/1/3/0/6/130639532/7818671.pdfIn PDF document text
    • http://coatesvilleonthemove.org/uploads/1/3/0/8/130874437/tezatokukim.pdfIn PDF document text
    • http://sadityradio.com/uploads/1/3/0/8/130814715/tetoz.pdfIn PDF document text
    • http://www.lifewedesigned.com/uploads/1/3/0/4/130483413/5f3883a52.pdfIn PDF document text
    • http://pszichokardiologia.hu/uploads/1/3/0/2/130274322/7627171.pdfIn PDF document text
    • http://richmondpromise.com/uploads/1/3/0/2/130271103/7976503.pdfIn PDF document text
    • http://mta-sts.mx.clintonpottery.com/uploads/1/3/0/4/130435685/3565209.pdfIn PDF document text
    • http://brandonotes.net/uploads/1/3/0/9/130969308/6083932.pdfIn PDF document text
    • http://visionlampasas.com/uploads/1/3/0/2/130288720/36cb0ec5.pdfIn PDF document text
    • http://reutrivka.com/uploads/1/3/0/6/130639444/xomezivifak_mirotefow_dopak.pdfIn PDF document text
    • http://littlemiraclescleaning.com/uploads/1/3/0/4/130436162/4137868.pdfIn PDF document text
    • http://ptmwc.org/uploads/1/3/0/6/130620952/jasanepoluwo.pdfIn PDF document text
    • http://jp.yummypersianbite.com/uploads/1/3/0/7/130740011/92c9a6e.pdfIn PDF document text
    • http://murphyscafe.net/uploads/1/3/0/7/130738620/rumavejifamiza.pdfIn PDF document text
    • http://barbaraannkipferart.com/uploads/1/3/0/6/130640110/juzevepulamow_zomezivati.pdfIn PDF document text
    • http://ibriz.org/uploads/1/3/0/6/130639533/bcf9f3c3b00c49e.pdfIn PDF document text
    • http://one27photography.com/uploads/1/3/0/5/130545636/739037.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
🗂 Part of campaign: ibriz.org 10 samples

Related samples 4

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_off00011e4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E4D 9644 bytes
SHA-256: f03f96dfc4e4dc8594785674449b4d1879ddacb095a4d7dc9de8cb84a003ce6e
font_01_sfnt_off00013fee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FEE 16036 bytes
SHA-256: 779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63

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