Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e8e7753cbe0f4bd…

MALICIOUS

PDF

34.5 KB Created: 2020-08-25 02:44:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61776bb6c922a4462271891e83d261f7 SHA-1: 9246d59a8159611ce4f0eef4a4d6d4c5bb8040f6 SHA-256: 1e8e7753cbe0f4bdcd27f31156f0c3d747e04cf0ffe63c1851005af4885fb201
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic firing indicates a direct link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=ahora+me+llama+free'. The document body, though heavily obfuscated, contains this same redirector URL, suggesting the primary purpose is to direct users to malicious infrastructure.

Heuristics 3

  • 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.
  • 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=ahora+me+llama+free
    • http://files.flagwool.com/uploads/1/3/1/3/131398000/divexovoz_sabexikat_pilevejigedew.pdf
    • http://files.jeremiahtitsworthmusic.com/uploads/1/3/1/6/131606431/xupobofuzupa_neliw_toxozufopaja_xegorodof.pdf
    • http://files.kiilz.com/uploads/1/3/1/8/131871433/pagop.pdf
    • http://files.alysonward.com/uploads/1/3/1/3/131382243/tetilumexivivowugu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6694/9786/files/sijukelawor.pdf
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/tosiragesizevegifamilo.pdf
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/6122116256.pdf
    • https://cdn.shopify.com/s/files/1/0433/7437/9158/files/11472717465.pdf
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/effective_public_relations_and_media_strategy.pdf
    • https://cdn.shopify.com/s/files/1/0430/0544/4259/files/gasification_of_coal.pdf
    • https://cdn.shopify.com/s/files/1/0434/7327/2998/files/shooting_games_free_for_mobile_android.pdf
    • https://cdn.shopify.com/s/files/1/0432/7486/2758/files/ocr_biology_examiners_report_2018.pdf
    • https://cdn.shopify.com/s/files/1/0432/6542/5563/files/zizixomo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8631/5684/files/business_plan_for_web_development_company.pdf
    • https://cdn.shopify.com/s/files/1/0435/9290/8962/files/david_harvey_a_brief_history_of_neoliberalism.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000043cc.bin
6c6db212c202d2b90b75e682ff80706de958b4adb1a51732761c26a4d9133626		 pdf-font-stream PDF embedded font (sfnt) at offset 0x43CC 4820 bytes
font_01_sfnt_off00005405.bin
9fc0a949098cc12a38c15b2e1466728666a7070f4f818225480391aa537db16b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5405 13080 bytes

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