Malicious PDF — malware analysis report

Static analysis result for SHA-256 0aeb89a3e3ac099e…

MALICIOUS

PDF

50.4 KB Created: 2020-09-17 11:47:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f61d2f29aeef46ab75e42ee123d9ca4 SHA-1: 066b0a88121ba257386450c06543c337ccdaa5d6 SHA-256: 0aeb89a3e3ac099e652f0dc6d70e3546e5f2c26c0aede15208bfe08a4665b55d
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, forming a link farm designed to direct users to external content. One of the primary links, https://ttraff.club/wix?keyword=la+sangre+de+cristo+tiene+poder+biblia, is identified as a malicious redirector. The document's structure and the presence of numerous links suggest an attempt to manipulate search engine rankings or distribute malicious content through a chain of redirects.

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.club/wix?keyword=la+sangre+de+cristo+tiene+poder+biblia
    • http://selopo.fairfaxpinesenglishlabradors.com/uploads/1/3/1/3/131380600/9254152.pdf
    • http://mifoso.carperfamilyband.com/uploads/1/3/2/3/132302944/5880372.pdf
    • http://tazitin.monashsoccerclub.com/uploads/1/3/1/4/131483128/kapilobexoxizi.pdf
    • http://wabeger.coveyoupottery.com/uploads/1/3/1/4/131407995/rimikifo-vunanorapusum-mutewirop-loditadu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://e7298390-5aeb-4398-a243-1cd86a840d9f.filesusr.com/ugd/9117e0_e71f598f72b64f0ab0eef67b6d3f7772.pdf?index=true
    • https://1deec956-a464-4219-9d9c-a9ac42cb0d31.filesusr.com/ugd/79e5df_a33d72da006b41d48878a1fd2a882e91.pdf?index=true
    • https://b6ff8a0d-200a-4a18-9424-ab205356fc09.filesusr.com/ugd/b5aed9_d0bb87ffe11e40dcbc40b52805a0ec6a.pdf?index=true
    • https://c9aa6577-d5b4-4b04-a527-af0f62993664.filesusr.com/ugd/3d0627_517a462d6def4f6ca4bd0aea2b60dc61.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0437/6113/9861/files/18848942729.pdf
    • https://cdn.shopify.com/s/files/1/0431/6659/7288/files/zakakebuzadupatipo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5221/2128/files/85171413146.pdf
    • https://cdn.shopify.com/s/files/1/0431/2619/4333/files/kofez.pdf
    • https://cdn.shopify.com/s/files/1/0429/4351/2732/files/atonal_music_theory.pdf
    • https://cdn.shopify.com/s/files/1/0460/0899/1905/files/31551535086.pdf
    • https://cdn.shopify.com/s/files/1/0433/8892/8150/files/word_processing_activities_for_middle_school.pdf
    • https://cdn.shopify.com/s/files/1/0427/8625/9100/files/45874865347.pdf
    • https://cdn.shopify.com/s/files/1/0431/5791/3754/files/chicken_flute_gungeon.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_off000083a7.bin
3ae471a61792b660d5f2e38e6fb1d53b771dc33e19d9a482fe9ab76612d918f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83A7 5320 bytes
font_01_sfnt_off000095ca.bin
3a0abfbcc56aba77e72658f065bfdc45f0105218345e2dff88cd0ff215c2e545		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95CA 11420 bytes

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