Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b8f650e021c935c…

MALICIOUS

PDF

48.9 KB Created: 2020-08-17 08:41:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70a2551ea912844d6b0bcdeca20cdc43 SHA-1: ecdffe9398e103fc4dd3e1b867af72b2c8247cee SHA-256: 8b8f650e021c935c705a057ddb75e463ddeda567c300c2edc33a2b906fd8ee6d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=bitlord+old+version++for+mac'. This URL is presented within the document body, suggesting a lure to trick users into clicking it. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many of which are benign Shopify links, likely used to mask the malicious redirector. The overall intent appears to be social engineering through a deceptive link.

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=bitlord+old+version++for+mac
    • http://nafivul.ontoyouresale.com/uploads/1/3/2/8/132814930/gejipa.pdf
    • http://files.fairfaxgammaphibeta.org/uploads/1/3/0/7/130739713/vazuganete.pdf
    • https://cdn.shopify.com/s/files/1/0430/9018/2304/files/jinonipiwetul.pdf
    • https://cdn.shopify.com/s/files/1/0434/7920/3992/files/formation_pour_auxiliaire_de_vie_scolaire.pdf
    • https://cdn.shopify.com/s/files/1/0440/4579/5493/files/bsc_cbz_notes.pdf
    • https://cdn.shopify.com/s/files/1/0437/4868/8033/files/zedisenigaxixofidobopunup.pdf
    • https://cdn.shopify.com/s/files/1/0435/0859/6900/files/59305888435.pdf
    • https://cdn.shopify.com/s/files/1/0435/9208/9763/files/67026764403.pdf
    • https://cdn.shopify.com/s/files/1/0435/7816/3363/files/miller_and_levine_biology_textbook_answers.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53293114795.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/395667921.pdf
    • https://cdn.shopify.com/s/files/1/0434/5308/7911/files/multivariate_time_series_analysis_in_r.pdf
    • https://cdn.shopify.com/s/files/1/0437/1120/1435/files/18905980193.pdf
    • https://cdn.shopify.com/s/files/1/0427/7587/1654/files/gidifetedeni.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_off0000786c.bin
c6c368f0d617f84a9e13dfb5c77764d491c1b29be65b6ff0236dd2c7de83713c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x786C 5276 bytes
font_01_sfnt_off00008a4a.bin
72a9694d06a8dd4c571203763b61edc26799959a777a54391cfa1dbc2a4a9fd2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A4A 13940 bytes

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