Malicious PDF — malware analysis report

Static analysis result for SHA-256 01197d71e690bdfc…

MALICIOUS

PDF

49.5 KB Created: 2020-08-15 05:24:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1d624957fb61ba43cc1a984a74c161f3 SHA-1: e15c1e3cb841e622eccbd4a435182894ff5783a0 SHA-256: 01197d71e690bdfcfd23df97efa402fb5b207af4d06eec32f64431a5a3d2a0fb
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as a movie download. The document body, though heavily obfuscated, contains the same URL and appears to be a lure. The PDF also hosts a large number of links to other PDFs, likely for SEO manipulation to improve the ranking of the malicious redirector.

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.ru/pify?keyword=ambarsariya+full+hd+movie++filmywap
    • http://files.annarowewhite.com/uploads/1/3/2/6/132695278/panipebewupud.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0434/0996/5212/files/3575318934.pdf
    • https://cdn.shopify.com/s/files/1/0434/1976/2840/files/setaxawesoxu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/28821374719.pdf
    • https://cdn.shopify.com/s/files/1/0440/1712/3478/files/articles_of_incorporation_delaware.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/muriwome.pdf
    • https://cdn.shopify.com/s/files/1/0436/0781/8398/files/38043612219.pdf
    • https://cdn.shopify.com/s/files/1/0430/7877/9029/files/47480954000.pdf
    • https://cdn.shopify.com/s/files/1/0432/4645/2899/files/wing_chun_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0435/9441/6290/files/79380194328.pdf
    • https://cdn.shopify.com/s/files/1/0434/1471/6572/files/artificial_intelligence_journal_2020.pdf
    • https://cdn.shopify.com/s/files/1/0434/3978/4103/files/45047657861.pdf
    • https://cdn.shopify.com/s/files/1/0431/0158/5570/files/janiwasep.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNU
    • http://www.gnu.org/copyleft/gpl.htmRegular

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005eba.bin
b972d991ece4942948c09195cd2285e34c11e9874e7727c3b20c65d3e92ddc85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EBA 5664 bytes
font_01_sfnt_off000071e7.bin
d0c9e33916e9e64e42e31bcf0d345f6c2fcd41735b1a34df0119bd0eb1094281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71E7 3720 bytes
font_02_sfnt_off00007d4a.bin
d99fe2608bc499a0a23123961089f3f0ac550aa72567e24fb5c281b4cbc9ff72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D4A 9712 bytes
font_03_sfnt_off00009ecf.bin
f1c2d5a9f5cd3d5d9cba82cac558d1930599508aaa2e9649fb7b10ed4037cc49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9ECF 7568 bytes

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