Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e0e5a0dbc8d000b…

MALICIOUS

PDF

44.2 KB Created: 2020-07-15 03:42:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ce71026502478335252c38b04f610c8 SHA-1: 18f2a9f48de77539c369e26b410798669ca580af SHA-256: 6e0e5a0dbc8d000bff31f04dbc4dc1734bf369ee0b3c9dbde3a0b32938837810
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to suspicious domains and appear to be part of a link farm designed to manipulate search engine results. One critical heuristic identified a link to known malicious redirector infrastructure. While no scripts were explicitly extracted, the nature of the embedded links suggests an attempt to redirect users to potentially malicious content or phishing sites.

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.com/wb?keyword=citroen%20c8%20instruction%20manual
    • http://files.thestonestash.com/uploads/1/3/0/9/130969485/3252634.pdf
    • http://files.parkhillbowlingclub.com/uploads/1/3/2/8/132815154/4047543.pdf
    • http://files.midlandsurgicalinstruments.com/uploads/1/3/0/7/130739073/8481977.pdf
    • http://files.sarnetfl.com/uploads/1/3/1/3/131398091/lemabomusu_zeralifena_pefepip_gebojodu.pdf
    • http://files.silasclifford-smith.com/uploads/1/3/2/8/132814552/5006569.pdf
    • http://files.steepleclaydonschool.com/uploads/1/3/0/9/130969775/2b53fe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://vonemozovema.files.wordpress.com/2020/06/xijuruwagakewuj.pdf
    • https://tulibefeza.files.wordpress.com/2020/07/40494434861.pdf
    • https://nolomijavugi.files.wordpress.com/2020/06/70401802882.pdf
    • https://fikuravere.files.wordpress.com/2020/07/vomitamija.pdf
    • https://fafabozum.files.wordpress.com/2020/06/2914744571.pdf
    • https://cdn.shopify.com/s/files/1/0430/7035/7653/files/64417653995.pdf
    • https://cdn.shopify.com/s/files/1/0430/9018/2304/files/ginijujuk.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wopesutokuvikoku.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53681635306.pdf
    • https://cdn.shopify.com/s/files/1/0433/7513/2824/files/47681298513.pdf
    • https://cdn.shopify.com/s/files/1/0429/8607/8369/files/8645094528.pdf
    • https://cdn.shopify.com/s/files/1/0428/2174/6847/files/fegukakaragupur.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_off000070a9.bin
8c7551e84f6215b775ebda45aa3b9a58629867bb2371a29f7e8483f486612cb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70A9 5044 bytes
font_01_sfnt_off000081af.bin
69ccacb5ace4d3f5043c62fca493f5f37803ba3588aff500913c2714781d9087		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81AF 9876 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.