Malicious PDF — malware analysis report

Static analysis result for SHA-256 90dcae8165a1db39…

MALICIOUS

PDF

45.7 KB Created: 2020-03-16 04:33:31 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 46143b129b0db56776f54fac71bc1ff4 SHA-1: e5bd6c4386a1c3f510480d4859b6f8c5a06f89f0 SHA-256: 90dcae8165a1db392a8820db0f4c7d24020cefb171d3b0a170940f9e481d5aaf
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 to various domains, as indicated by the PDF_SEO_LINK_FARM heuristic. The document body text is heavily obfuscated but appears to contain some of these URLs. The primary goal seems to be directing users to a vast collection of other PDF files, likely for SEO poisoning or to host 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://host225.carmichaelnl.com/uploads/1/3/0/3/130313356/130313356.html#4th+grade+science+project+report+examples PDF link annotation
    • http://miranda-moore.com/uploads/1/3/0/7/130739595/c38b5.pdfIn PDF document text
    • http://thetoptraveltrips.com/uploads/1/3/0/6/130622075/javolelupit.pdfIn PDF document text
    • http://www.mhevesi.com/uploads/1/3/0/8/130873984/6ac61b23.pdfIn PDF document text
    • http://swearingenfamily.com/uploads/1/3/0/7/130775837/dc19eb88945b5a1.pdfIn PDF document text
    • http://obxelectrical.com/uploads/1/3/0/5/130539093/mirali_rijikutiw_nazipunib.pdfIn PDF document text
    • http://drakealexanderwalling.com/uploads/1/3/0/4/130476322/mofokizi.pdfIn PDF document text
    • http://www.childrensfundpiercecounty.com/uploads/1/3/0/5/130539446/dazaze_xiwezupabesik_tafizexopozajeg.pdfIn PDF document text
    • http://www.chriswojda.com/uploads/1/3/0/7/130740193/5dbab3c4904.pdfIn PDF document text
    • http://www.ecospherenature.be/uploads/1/3/1/0/131070713/tesuzi.pdfIn PDF document text
    • http://soundnotion.tv/uploads/1/3/0/6/130640039/bogusigivegif.pdfIn PDF document text
    • http://aelmorris.com/uploads/1/3/0/6/130640063/zolarorela.pdfIn PDF document text
    • http://womeninyouthsportscoaching.com/uploads/1/3/0/4/130435650/a3b40144.pdfIn PDF document text
    • http://www.designerfashioncrave.com/uploads/1/3/0/7/130739381/983b25f81b4c2.pdfIn PDF document text
    • http://thebadassboss.com/uploads/1/3/0/6/130620614/xosepezoti_kiwozuseg_togawemibik_ximavopumu.pdfIn PDF document text
    • http://cquartspaceweeblyonline.com/uploads/1/3/0/8/130814290/902accdab60440c.pdfIn PDF document text
    • http://www.fwcsb.org/uploads/1/3/0/6/130620402/f8e6367a25f297.pdfIn PDF document text
    • http://www.professionalgardener.org/uploads/1/3/0/2/130289554/5642002.pdfIn PDF document text
    • http://laptoppromagazine.com/uploads/1/3/0/5/130542781/torivofoj_kowuz_lapuj.pdfIn PDF document text
    • http://tacticalmonkey.net/uploads/1/3/0/8/130874326/wozov.pdfIn PDF document text
    • http://www.verricoinsuranceagency.com/uploads/1/3/0/6/130604401/6680911.pdfIn PDF document text
    • http://bleakwhimsy.com/uploads/1/3/0/8/130813366/5ac8c.pdfIn PDF document text
    • http://mta-sts.smtp1.ecoledemusiquejoliette.com/uploads/1/3/0/6/130620637/fakekudutad_lulonukoxin_lutojifagopoda_tamopezuf.pdfIn PDF document text
    • http://wicklowpartners.com/uploads/1/3/0/2/130274151/d573c76bc93a.pdfIn PDF document text
    • http://www.donerboyz.com/uploads/1/3/0/7/130776078/zumuka_jazas.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
🗂 Part of campaign: bandheadreunions.com 8 samples

Related samples 1

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008a39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A39 7892 bytes
SHA-256: a6fd0094a3b47613f0b7d86af0cbd38da3211b7cd2bbb77b2840ce2b639831a7

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