Malicious PDF — malware analysis report

Static analysis result for SHA-256 50b827717d4a1ad4…

MALICIOUS

PDF

39.7 KB Created: 2020-08-14 21:10:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7921a99b7b8ac5ca51fcac2de6d7e10a SHA-1: 42c4bdb5705ff12ef38dd66b637a688e8508de60 SHA-256: 50b827717d4a1ad4b217482bbe8cd14919cc00c9a00d267c8beed21ca25db04c
128 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, contains text related to 'Fnma guidelines for mortgage lates' and includes the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of a link farm further indicates an attempt to distribute content or traffic.

Heuristics 4

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=fnma+guidelines+for+mortgage+lates
    • http://files.mtglobe.com/uploads/1/3/1/4/131410545/dadadu-kujodedevijus-funodetifi-wereganunemeli.pdf
    • http://files.newbedfordtattoocompany.com/uploads/1/3/2/7/132740399/melisuwaziv-koxilo-fujibo.pdf
    • http://files.jimnelsonphotography.com/uploads/1/3/1/4/131407183/geduxajofofel.pdf
    • http://files.classyclothingcovers.com/uploads/1/3/1/4/131406412/5432607.pdf
    • https://cdn.shopify.com/s/files/1/0427/9874/3719/files/vubulajerisefazo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4116/9303/files/work_performance_appraisal_template.pdf
    • https://cdn.shopify.com/s/files/1/0430/4306/1913/files/lunuxuruterasujik.pdf
    • https://cdn.shopify.com/s/files/1/0433/4796/8149/files/html_print_div.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tobilefoseparavako.pdf
    • https://cdn.shopify.com/s/files/1/0434/5502/1206/files/sri_bhagavath_geetha_malayalam_text.pdf
    • https://cdn.shopify.com/s/files/1/0432/7741/8651/files/computer_science_book_for_class_12_it_series.pdf
    • https://cdn.shopify.com/s/files/1/0428/7099/7151/files/65581259391.pdf
    • https://cdn.shopify.com/s/files/1/0430/5348/2135/files/sevodokugikogaz.pdf
    • https://cdn.shopify.com/s/files/1/0432/0693/4688/files/nubonafatojojavexuman.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_off00005cc4.bin
bd8115585735e9dd17ad1476d057f9b0faf13d72b24a23a10a0611d359a50788		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC4 5184 bytes
font_01_sfnt_off00006e49.bin
276365187f4dfad981d6139974980228b9d0d5348d86c20b580ad26c7d7872ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E49 10444 bytes

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