Malicious PDF — malware analysis report

Static analysis result for SHA-256 22a91e848d888ba0…

MALICIOUS

PDF

71.6 KB Created: 2020-03-12 11:58:51 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 694b28d19dc6d31c1240f36d0c9da821 SHA-1: 59215e9fdd5dcad94d0c5508da41d86fa5e5b54b SHA-256: 22a91e848d888ba068eb8d0af215b7becd928ae69977e402038677f29df04e5e
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to PDF files with numeric slugs, indicative of a link farm for SEO manipulation. One of the embedded URLs, 'http://flex87.pleasingfood.com/uploads/1/3/0/7/130739268/130739268.html#geek+vape+aegis+legend+firmware+update', suggests a lure related to a firmware update for a popular electronic device. The document body also contains similar text, reinforcing the lure. The primary purpose appears to be directing users to potentially malicious external sites.

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://flex87.pleasingfood.com/uploads/1/3/0/7/130739268/130739268.html#geek+vape+aegis+legend+firmware+update PDF link annotation
    • http://www.kimberlysbelleboutique.com/uploads/1/3/0/7/130776043/9836a4f8.pdfIn PDF document text
    • http://1000walks.com/uploads/1/3/0/9/130969205/kigitogeg.pdfIn PDF document text
    • http://flykingzcollection.com/uploads/1/3/0/5/130545666/80b73af.pdfIn PDF document text
    • http://555-jeudirouge.fr/uploads/1/3/0/4/130435875/gozusalifukur_fabuna_loredikukel.pdfIn PDF document text
    • http://music4ads.com/uploads/1/3/0/5/130588497/jikibejanebatox.pdfIn PDF document text
    • http://comissionusf.com/uploads/1/3/0/7/130775378/1588489.pdfIn PDF document text
    • http://ideasdesignservices.com/uploads/1/3/0/5/130545021/709f548.pdfIn PDF document text
    • http://8g34a.bpmtc.com/uploads/1/3/0/2/130272981/xopemukar.pdfIn PDF document text
    • http://montessorilawrence.org/uploads/1/3/0/3/130313356/4922296.pdfIn PDF document text
    • http://nativologie.com/uploads/1/3/0/6/130605335/gepema.pdfIn PDF document text
    • http://ourwildhomes.com/uploads/1/3/0/6/130639862/c65861bb2.pdfIn PDF document text
    • http://www.pribba.com/uploads/1/3/0/6/130603860/nuvasafudobavokabiw.pdfIn PDF document text
    • http://autodiscover.parkhillchiropractic.com/uploads/1/3/0/8/130874533/pomis_wozimuzomevev.pdfIn PDF document text
    • http://poolwell.com/uploads/1/3/0/6/130604564/5146675.pdfIn PDF document text
    • http://swayecapitale.com/uploads/1/3/0/3/130323160/gaxopifomoju.pdfIn PDF document text
    • http://boutique4theunique.com/uploads/1/3/0/4/130477702/fa9a3d29.pdfIn PDF document text
    • http://coolbidets.com/uploads/1/3/0/2/130289550/acc3fbd70a5c22.pdfIn PDF document text
    • http://test.wildwaterexpress.com/uploads/1/3/0/5/130539165/4259503.pdfIn PDF document text
    • http://kaizensalonandspa.com/uploads/1/3/0/6/130639155/5726874.pdfIn PDF document text
    • http://mta-sts.mail.teganpoo.com/uploads/1/3/0/6/130639317/2526783.pdfIn PDF document text
    • http://goatboydesigns.com/uploads/1/3/0/6/130620334/9283592.pdfIn PDF document text
    • http://www.justinmarcheselmft.com/uploads/1/3/0/8/130874316/9810187.pdfIn PDF document text
    • http://poplarsonrimu.info/uploads/1/3/0/6/130603761/jegigelaged.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://www.adobe.com/).NotoIn PDF document text
    • http://www.google.com/get/noto/http://www.adobe.com/type/ThisIn PDF document text
    • http://scripts.sil.org/OFLNotoIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d74f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD74F 9080 bytes
SHA-256: 66c7c87942506eeebfce2a899dc176a5203abe8072098c74f44ac41b8f60f3e8
font_01_sfnt_off0000f9bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9BD 4152 bytes
SHA-256: 0a8651204712d77b3df8786b20c09d46779fa8f6890d30c9d9c12e9401afa574
font_02_sfnt_off000106cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106CD 1704 bytes
SHA-256: a2f0e64d6975656d959a0794b9a965349b6a87240c16eb122ddb64596f86590d

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