Malicious PDF — malware analysis report

Static analysis result for SHA-256 8aba9b51c51d8ebd…

MALICIOUS

PDF

40.1 KB Created: 2020-08-20 06:56:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44301c2cb14499dfbcb2611104d70909 SHA-1: 821cee4d71a3cc6767881d81fb162328483d74d0 SHA-256: 8aba9b51c51d8ebd1b3c3413d9f6617ff2da3b9f6d6bff279db316cf6f209dfa
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.cc). This indicates a link farm attack pattern, likely intended to lure users to malicious content or phishing sites. The document body itself is heavily obfuscated and contains the malicious URL, further supporting this assessment.

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=breitling+aerospace+titanium+user+manual
    • http://bikuz.houstonmiddlebands.com/uploads/1/3/1/6/131636755/457271.pdf
    • https://cdn.shopify.com/s/files/1/0428/9573/6988/files/surah_al_kahfi_rumi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wixedazatujiguxup.pdf
    • https://cdn.shopify.com/s/files/1/0431/0433/8074/files/dulasaxodaxigupelopixe.pdf
    • https://cdn.shopify.com/s/files/1/0430/7828/7521/files/57678928389.pdf
    • https://cdn.shopify.com/s/files/1/0431/2861/9168/files/84486294179.pdf
    • https://cdn.shopify.com/s/files/1/0432/6604/8164/files/modern_cv_template_word_free_._docx.pdf
    • https://cdn.shopify.com/s/files/1/0437/6474/4343/files/6422679046.pdf
    • https://cdn.shopify.com/s/files/1/0434/6930/8061/files/tofepivekitufixovojim.pdf
    • https://cdn.shopify.com/s/files/1/0434/7812/2649/files/bushings_for_power_transformers_a_handbook_for_power_engineers.pdf
    • https://cdn.shopify.com/s/files/1/0429/2476/9436/files/81277495474.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_off00005efc.bin
71595a0f8e4ccc66ff5f64d8eea472c305ae2eded7ef71458d5acac1a4145323		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EFC 5304 bytes
font_01_sfnt_off000070ed.bin
df65c6aad0585d5c99ef5ce4fba45797b58c201eba1cedeae94aabb2067dc585		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70ED 10276 bytes

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