Malicious PDF — malware analysis report

Static analysis result for SHA-256 90f022919e03edbf…

MALICIOUS

PDF

41.8 KB Created: 2020-08-23 04:41:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ed90cd7deebec68a49b3bb31da2c53e SHA-1: 3a3191e75bdfcd8ac061a9fdb28bcf6a06d15859 SHA-256: 90f022919e03edbf5156f48bbcf82a0d2b51548bc32bc580538749358394b412
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The document body, though partially corrupted, contains text related to 'Navigation bar apk android' and includes a direct link to the malicious redirector. This suggests a phishing or scam attempt designed to lead users to malicious content.

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.ru/pify?keyword=navigation+bar+apk+android+2.+3
    • http://rufop.greenblackdress.com/uploads/1/3/2/8/132814930/rukabidinude.pdf
    • http://files.the2degrees.org/uploads/1/3/1/3/131398424/b02c4f29d8d477.pdf
    • http://files.kwonseulgi.com/uploads/1/3/0/8/130873947/xutejexabutiviji.pdf
    • https://cdn.shopify.com/s/files/1/0434/0151/1068/files/talos_principle_b4_star.pdf
    • https://cdn.shopify.com/s/files/1/0430/9798/1082/files/77290958334.pdf
    • https://cdn.shopify.com/s/files/1/0430/6560/6301/files/34665462742.pdf
    • https://cdn.shopify.com/s/files/1/0435/7252/7267/files/57783696685.pdf
    • https://cdn.shopify.com/s/files/1/0438/5410/2688/files/55595191131.pdf
    • https://cdn.shopify.com/s/files/1/0452/3101/4045/files/edgar_allan_poe_tell_tale_heart.pdf
    • https://cdn.shopify.com/s/files/1/0435/1872/2207/files/watitifuma.pdf
    • https://cdn.shopify.com/s/files/1/0432/6418/0390/files/anari_film_ki_ringtone.pdf
    • https://cdn.shopify.com/s/files/1/0433/3826/8827/files/54324159037.pdf
    • https://cdn.shopify.com/s/files/1/0439/4775/3640/files/tuzegefifufixolatiwegob.pdf
    • https://cdn.shopify.com/s/files/1/0438/8388/8808/files/neoclassicismo_arte.pdf
    • https://cdn.shopify.com/s/files/1/0430/8054/8503/files/duwavepukisovovafu.pdf
    • https://cdn.shopify.com/s/files/1/0427/5660/4070/files/85851615131.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f53.bin
dbfbb2d0b1428a41c4de832c87d5c6b71db04cf8cbd02f4c4ab737f04765bfcf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F53 5476 bytes
font_01_sfnt_off0000620d.bin
90883f55438f748fd014fe8f4b65cc133caf9bf5eb27ef1ce861310348c1c9f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x620D 10008 bytes
font_02_sfnt_off0000848f.bin
1873fa7a539ff00c8c1392723f18eb1e977adbfda941d447d459c5f21b93b389		 pdf-font-stream PDF embedded font (sfnt) at offset 0x848F 16204 bytes

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