Malicious PDF — malware analysis report

Static analysis result for SHA-256 60186648ac7a045b…

MALICIOUS

PDF

42.3 KB Created: 2020-03-14 22:50:55 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 1ab11ce72f11c83744174ac0124f84b9 SHA-1: a525456eff1884ec7c140f4a4f5eeea0b37283c8 SHA-256: 60186648ac7a045bdefdf8ef22217132b6b9e3eaf318f6d215cfa3b67e5d2910
96 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, detected as a link farm, pointing to various domains. The embedded document body text, though partially obfuscated, includes a URL that is also present in the list of extracted URLs. This suggests the primary purpose is to redirect users to a network of potentially malicious or spam-related websites, possibly for SEO manipulation or to serve further malicious 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://abbeys-family.rominastiebenphotography.com/uploads/1/3/0/6/130620997/130620997.html#benzylidene+acetal+formation+mechanism
    • http://dotapros.com/uploads/1/3/0/7/130776852/ef06addb5715855.pdf
    • http://www.loneeaglefirearms.com/uploads/1/3/0/4/130488382/ff04444e.pdf
    • http://monicarossa.com/uploads/1/3/0/4/130435846/5249072.pdf
    • http://sonoranlashes.com/uploads/1/3/0/8/130874329/mexavamejobinag.pdf
    • http://marcsilverguitarimprov.net/uploads/1/3/0/5/130539763/fezoren-gupedem-varideveb-xunetowalaxi.pdf
    • http://carsonbrace.com/uploads/1/3/0/7/130738644/7162021.pdf
    • http://secondary.hkacademy.edu.hk/uploads/1/3/0/2/130272994/pelogedinuvefidi.pdf
    • http://theartbusproject.com/uploads/1/3/0/7/130775279/tubotudegova-sodor-siburuteta.pdf
    • http://sunplusmoonstone.com/uploads/1/3/0/6/130639700/5345918.pdf
    • http://terraopus.ca/uploads/1/3/0/7/130739063/73cace9.pdf
    • http://cpanel.ftsergioferreira.com/uploads/1/3/0/4/130435690/9645813.pdf
    • http://sos-fansubs.com/uploads/1/3/0/4/130488163/184ff6d22ff3.pdf
    • http://ed2connect.com/uploads/1/3/0/8/130814715/pejewoke.pdf
    • http://newyearsknockout.com/uploads/1/3/0/7/130776037/penigabesogaxur.pdf
    • http://www.leoningzhuoliu.com/uploads/1/3/0/3/130379549/1c1ca0.pdf
    • http://downsideupphoto.com/uploads/1/3/0/4/130477829/bf1af32e0b9ce.pdf
    • http://www.abouttherightfitllc.com/uploads/1/3/0/7/130739684/a5a5a0209f064f.pdf
    • http://appaguides.com/uploads/1/3/0/7/130739333/3173914.pdf
    • http://littlejohn-dellar.net/uploads/1/3/0/6/130640029/motekisujesus.pdf
    • http://autodiscover.ryandavidbirdlarson.com/uploads/1/3/1/0/131071175/d16e851a2c1.pdf
    • http://strobelightsforcars.net/uploads/1/3/0/5/130538863/8959108.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000729f.bin
ed066b1de12250c5e5da56934a5dca9edd8dfd00c6d3dbc35c25eaef1d9af596		 pdf-font-stream PDF embedded font (sfnt) at offset 0x729F 7772 bytes
font_01_sfnt_off0000902b.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x902B 2652 bytes

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