Malicious PDF — malware analysis report

Static analysis result for SHA-256 1202523d9d7539e1…

MALICIOUS

PDF

44.4 KB Created: 2020-08-18 14:05:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90db0e539def712624466d25f0ece94b SHA-1: a54ba2c99a03b67b1f40ba7d55c07fc75d048911 SHA-256: 1202523d9d7539e1df4f75d59345a33cc989b293f13e77f169a6c9a9a91ccd1b
154 Risk Score

Malware Insights

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

This PDF file contains numerous links, including one pointing to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be part of a link farm designed to attract traffic. The presence of a malicious redirector suggests an attempt to phish users or deliver further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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 https://ttraff.cc/pify?keyword=android+one+moto+x4+review+cnet
    • http://files.itisifairytales.com/uploads/1/3/1/4/131483143/sedapamumipos.pdf
    • http://pebusur.drwatkinschs.com/uploads/1/3/0/7/130776769/tewetotulupi-dekudisifone.pdf
    • http://defunetit.yantraearth.com/uploads/1/3/1/4/131453574/7eecbf571297.pdf
    • http://files.brewedandboozedfood.com/uploads/1/3/1/4/131437123/3a02cc877b6784.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9832/5671/files/zinejujowokiradilawaxage.pdf
    • https://cdn.shopify.com/s/files/1/0434/0151/1064/files/q13_news_live.pdf
    • https://cdn.shopify.com/s/files/1/0431/4077/6090/files/25036036575.pdf
    • https://cdn.shopify.com/s/files/1/0432/7063/5678/files/nissan_almera_n16_manual_rus.pdf
    • https://cdn.shopify.com/s/files/1/0431/5516/1252/files/96863133182.pdf
    • https://cdn.shopify.com/s/files/1/0432/9157/4430/files/kivesuvumufu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0266/6906/files/27016320406.pdf
    • https://cdn.shopify.com/s/files/1/0434/5289/1297/files/affairscloud_current_affairs_app.pdf
    • https://cdn.shopify.com/s/files/1/0433/5498/0505/files/wipapofifo.pdf
    • https://cdn.shopify.com/s/files/1/0430/1848/5923/files/punanikumadupurolozele.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007036.bin
b7697d4e4b4ebca454b77e82a4b1919f2006bafdef4a486d80d0015d551aa763
pdf-font-stream PDF embedded font (sfnt) at offset 0x7036 4964 bytes
font_01_sfnt_off00008118.bin
e9289546200d58f0a916c4a57ddddf8802678b43955cf90618d270ee1fd9b3d4
pdf-font-stream PDF embedded font (sfnt) at offset 0x8118 10364 bytes