Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f4255a4222adfa0…

MALICIOUS

PDF

39.8 KB Created: 2020-08-21 01:55:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4114114d0cff1922581659cfc36c5557 SHA-1: 43372a8b0304612826f8c5bcd1dd941d6a73ac46 SHA-256: 3f4255a4222adfa0a0dd4628f42cbe845c3a84ab5538f1c5d7cda2f51c645ca6
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Online advertising expenditure report 2017' and the malicious URL. This suggests a social engineering lure to trick users into visiting the redirector, which likely leads to further 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.cc/pify?keyword=online+advertising+expenditure+report+2017
    • http://files.nikolephoto.com/uploads/1/3/0/9/130969220/12929bdcb3dc2.pdf
    • http://dixefig.poringlandparishcouncil.gov.uk/uploads/1/3/1/1/131163898/jutonuf.pdf
    • http://files.summitorthosports.com/uploads/1/3/1/4/131483336/bca2559d69c.pdf
    • http://files.hirojack.com/uploads/1/3/0/7/130776166/dizub_xobopow_zezefugotida_mogakorevuwab.pdf
    • https://cdn.shopify.com/s/files/1/0432/8521/7436/files/zazadugutovitivir.pdf
    • https://cdn.shopify.com/s/files/1/0428/9078/9027/files/45171450056.pdf
    • https://cdn.shopify.com/s/files/1/0437/4013/5575/files/celiakia_dieta.pdf
    • https://cdn.shopify.com/s/files/1/0437/3735/0309/files/kapiwuxisonagap.pdf
    • https://cdn.shopify.com/s/files/1/0432/6552/3862/files/chuyn_i_thnh_nh.pdf
    • https://cdn.shopify.com/s/files/1/0438/4518/9794/files/89829099516.pdf
    • https://cdn.shopify.com/s/files/1/0428/7456/8860/files/approximation_for_po.pdf
    • https://cdn.shopify.com/s/files/1/0431/7741/0724/files/credit_note_in_gst.pdf
    • https://cdn.shopify.com/s/files/1/0429/3407/5558/files/44279151803.pdf
    • https://cdn.shopify.com/s/files/1/0431/0581/2629/files/najovoxepipunufo.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_off00005a9b.bin
e627d7279a056ff23caacec57b68bf592e73ab50886cd2e4e672557bfdb29e85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A9B 5688 bytes
font_01_sfnt_off00006e1f.bin
bba783915ce229b30cdabe8326a60ab49931f982d2a722382fc780227828484e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E1F 11196 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.