Malicious PDF — malware analysis report

Static analysis result for SHA-256 2aea2974157d7c9d…

MALICIOUS

PDF

51.1 KB Created: 2020-04-03 12:41:28 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b3b227ad608b4b5d0c41fd0211447147 SHA-1: 7378d5c11e5eb9bd53510d376a9822d564a7eb04 SHA-256: 2aea2974157d7c9dd84a52cbec66f1da271863c1c012466289bf930dca9f0a14
92 Risk Score

Malware Insights

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

This PDF document is classified as malicious by an ML model. It contains a large number of embedded external links, many of which point to other PDF files hosted on various domains. This behavior is indicative of a link farm or SEO spam campaign designed to drive traffic to potentially malicious content. The primary attack pattern involves tricking users into clicking through a network of linked documents.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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
  • 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://gifts2help.com/uploads/1/3/1/3/131380000/131380000.html#circuitos+en+serie+y+paralelo+resistencias
    • http://mycyberphile.com/uploads/1/3/0/4/130488357/c9b97689c.pdf
    • http://alianzaporlademocracia.org/uploads/1/3/0/3/130323172/ad1aee541d86.pdf
    • http://rayesdesigns.com/uploads/1/3/0/4/130477018/1270879.pdf
    • http://bmchenterprises.com/uploads/1/3/0/7/130775589/feea42.pdf
    • http://mypathwaytosuccess.org/uploads/1/3/0/4/130436282/xoweduwuk_kiratimepanar_mejiwotega_xuniful.pdf
    • http://forlukefoundation.com/uploads/1/3/1/1/131163634/zebusokigageniz_godel_nezininadugeg_wekijevip.pdf
    • http://enzymeforce.com/uploads/1/3/1/3/131398269/6ee65.pdf
    • http://nebulatron.com/uploads/1/3/1/3/131381602/2414312.pdf
    • http://melisamarquezrodriguez.com/uploads/1/3/1/3/131379939/1589478.pdf
    • http://greatamericanflowers.com/uploads/1/3/0/2/130289161/d613fa418b2c261.pdf
    • http://mod-conference.com/uploads/1/3/1/3/131380163/xizuz.pdf
    • http://collegeloanrepay.com/uploads/1/3/0/7/130775563/f59b35e5d36.pdf
    • http://www.chandlersouthgatehotel.com/uploads/1/3/1/4/131454024/3349414.pdf
    • http://sunraybiznet.com/uploads/1/3/0/3/130323156/libulufila_dimoxitaso.pdf
    • http://bradfordcapitaladvisors.com/uploads/1/3/0/6/130621746/ritav_kesatiwiwexu_bomurero.pdf
    • http://mariamirojohnson.com/uploads/1/3/0/3/130313783/9616564.pdf
    • http://scoutx.us/uploads/1/3/0/7/130739197/429d661838602e0.pdf
    • http://elbowgreasevintiques.com/uploads/1/3/0/7/130776874/kavisema_jadogoxapagor.pdf
    • http://joyful-learning.net/uploads/1/3/0/7/130775503/cc05a87106bda.pdf
    • http://minneapolisangels.org/uploads/1/3/1/4/131406970/178263.pdf
    • 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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000085ff.bin
cc0704532479192bf6457f1a6cd27d777ddd7951821a1baebe1e510f134c6029		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85FF 9324 bytes
font_01_sfnt_off0000a73c.bin
f6fcf0cdec751ea1629ffc2ecf05c2f5b1be0e4f00d64635cbf782ead8006978		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA73C 16120 bytes

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