Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4ac50082acbe22b…

MALICIOUS

PDF

35.2 KB Created: 2020-08-16 20:31:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b8ea08f50ee2a9f621621c217d967a0 SHA-1: 7cccfbb5cf6dea421df4820abbbb75c1cf7abff2 SHA-256: a4ac50082acbe22ba5b900adf227ae270f1a6f42bc07bc2322f089a8cd24731f
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary malicious redirector URL identified. The document body text, though heavily obfuscated, includes the string 'adway latest apk onhax' and the malicious URL, suggesting a lure to download potentially unwanted or malicious software. The presence of numerous external links, many hosted on shopify.com, indicates a tactic to distribute content widely and potentially evade detection.

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=adway+latest+apk+onhax
    • http://files.andreabidwell.com/uploads/1/3/1/6/131637419/f5216e51664.pdf
    • http://files.starkvillepride.com/uploads/1/3/1/4/131407102/japuwopezi.pdf
    • http://mukisa.universalbillers.com/uploads/1/3/1/4/131438572/sugedarokalifiv.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/31195763979.pdf
    • https://cdn.shopify.com/s/files/1/0433/0926/9156/files/71769503850.pdf
    • https://cdn.shopify.com/s/files/1/0438/2644/6496/files/72099977811.pdf
    • https://cdn.shopify.com/s/files/1/0432/3190/3902/files/wipezud.pdf
    • https://cdn.shopify.com/s/files/1/0430/5436/6877/files/cell_biology_and_genetics_lecture_notes.pdf
    • https://cdn.shopify.com/s/files/1/0436/3629/3785/files/make_a_discord_server.pdf
    • https://cdn.shopify.com/s/files/1/0431/3051/9716/files/42371222468.pdf
    • https://cdn.shopify.com/s/files/1/0431/2553/8980/files/pebibikirefope.pdf
    • https://cdn.shopify.com/s/files/1/0437/8460/1752/files/65310697337.pdf
    • https://cdn.shopify.com/s/files/1/0436/3033/0019/files/ap_eenadu_news_paper.pdf
    • https://cdn.shopify.com/s/files/1/0432/4737/0402/files/kulegavu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1587610690.pdf
    • https://cdn.shopify.com/s/files/1/0434/5089/2454/files/miller_dynasty_200.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_off00004bec.bin
a0916ad487fa4c3a37a019802872436f26623db32479264e0a9b894640505001		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BEC 5268 bytes
font_01_sfnt_off00005def.bin
09da00aa6fc0ee4758f4226203edc09228fc50f93d22fc8a59e0400a90d13862		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DEF 10060 bytes

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