Malicious PDF — malware analysis report

Static analysis result for SHA-256 af989965f2800f91…

MALICIOUS

PDF

37.9 KB Created: 2020-08-31 00:51:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 778983c0487ad7ffddc509885ca26b5e SHA-1: d76fa89f64c6401cf515568c5ecf5140e75af27d SHA-256: af989965f2800f91e6febec49668a4708b062444eebde672c4967149104afbd5
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one identified as a malicious redirector. The document body is heavily obfuscated and appears to contain junk data, but it does include the malicious URL. The presence of a link farm suggests an attempt to distribute malicious content or conduct phishing operations. No scripts were extracted from this sample.

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/wix?keyword=head+first+data+analysis+amazon
    • https://cdn.shopify.com/s/files/1/0429/1526/6723/files/the_economist_july_20_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/0965/5462/files/cradlepoint_ibr1700_spec_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/4686/3005/files/bebifis.pdf
    • https://cdn.shopify.com/s/files/1/0431/7564/1247/files/pulutobesuror.pdf
    • https://cdn.shopify.com/s/files/1/0431/5329/3469/files/87327583327.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/78104165742.pdf
    • https://cdn.shopify.com/s/files/1/0429/2496/6044/files/2917845753.pdf
    • https://cdn.shopify.com/s/files/1/0444/1692/5863/files/95853472147.pdf
    • https://cdn.shopify.com/s/files/1/0441/0333/6088/files/append_char_to_string_c.pdf
    • https://cdn.shopify.com/s/files/1/0459/9739/2031/files/kibolanojulibukaliduxoga.pdf
    • https://cdn.shopify.com/s/files/1/0430/5246/6325/files/35186404528.pdf
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/nokizox.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_off000049e3.bin
ab923983597d51e7d16c773db33d57dd48015c79f315b609f2dd0b0c3720268a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49E3 4952 bytes
font_01_sfnt_off00005aa2.bin
3748ecf7911195e1d6ad01effe2c2403e2cde10d8cc6108b0ae9957a83dd20b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AA2 9992 bytes
font_02_sfnt_off00007cde.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CDE 4324 bytes

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