Malicious PDF — malware analysis report

Static analysis result for SHA-256 554ec0209ee814ce…

MALICIOUS

PDF

41.5 KB Created: 2020-08-04 19:05:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe81c6eb9542906b591f1d5d8365c98d SHA-1: df8bf418ab00dbc9f115d4de8c70c87f1384dcdc SHA-256: 554ec0209ee814ce65a34cadf8ba0edfffe36dca5639243f4752274f7da8558e
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of the primary links, 'https://ttraff.cc/pify?keyword=integral+membrane+proteins+pdf', is flagged as malicious. This suggests a link farm or SEO poisoning attack, where the document is designed to redirect users to malicious infrastructure, likely for phishing or malware distribution.

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=integral+membrane+proteins+pdf
    • http://files.jlhopewindsofpoetry.com/uploads/1/3/1/4/131438676/4988529.pdf
    • http://files.x-ovarvs.com/uploads/1/3/1/3/131383934/limogirozo-ritilemimedipi.pdf
    • http://files.wanderingalchemistjuiceco.com/uploads/1/3/0/7/130776308/01b35c6f7fd.pdf
    • http://files.haccc.org/uploads/1/3/2/7/132712207/taxujunetabar-fofogume-ravigadotoke-zarud.pdf
    • https://cdn.shopify.com/s/files/1/0428/2109/1484/files/vozatisakulaserob.pdf
    • https://cdn.shopify.com/s/files/1/0437/4944/1688/files/3041245438.pdf
    • https://cdn.shopify.com/s/files/1/0438/4066/7810/files/amazon_save_for_later.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57790570823.pdf
    • https://cdn.shopify.com/s/files/1/0432/7427/2924/files/ff14_macro_commands.pdf
    • https://cdn.shopify.com/s/files/1/0431/9081/2821/files/pizejujodazarabozeni.pdf
    • https://cdn.shopify.com/s/files/1/0433/9240/1573/files/69686490167.pdf
    • https://cdn.shopify.com/s/files/1/0428/1909/2647/files/back_propagation_neural_network_example.pdf
    • https://cdn.shopify.com/s/files/1/0437/2958/4293/files/10725067210.pdf
    • https://cdn.shopify.com/s/files/1/0428/8688/9625/files/kopanerepekama.pdf
    • https://cdn.shopify.com/s/files/1/0429/1903/5033/files/gitevibukuxaba.pdf
    • https://cdn.shopify.com/s/files/1/0438/6842/2309/files/xatedujewegerolatekexu.pdf
    • https://cdn.shopify.com/s/files/1/0428/3367/4396/files/41278596311.pdf
    • https://cdn.shopify.com/s/files/1/0431/2068/9306/files/1220604497.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_off00006428.bin
277c1e8e5c77bcede174c59a4458ee8639a9c69c07f326b34c05f2ec8ff12b5f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6428 5440 bytes
font_01_sfnt_off0000768c.bin
2319fb15c5615b56f824bf403d650692276dcfaf15bc9f4230238c49dd686fe2
pdf-font-stream PDF embedded font (sfnt) at offset 0x768C 10176 bytes