Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6cb5023a93de4ae…

MALICIOUS

PDF

39.8 KB Created: 2020-08-24 10:57:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9129c5a48604532517cf0ec25347f305 SHA-1: 827d0d7673a2266f814a32ea21155075377b707b SHA-256: a6cb5023a93de4ae8de1f50df4f3719adc6be4ea73d09d852f68bffc1e94b4cc
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=outlook+2016+64+bit+free'. This URL is presented within the document body, suggesting a social engineering lure to trick users into downloading software. The PDF also contains a large number of embedded links, many pointing to Shopify, which is flagged as a link farm, further indicating a malicious distribution strategy.

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.com/pify?keyword=outlook+2016+64+bit+free
    • http://girev.fresnomarriagecounselor.com/uploads/1/3/1/4/131453870/tovatef-panulezut-guxafasur.pdf
    • http://files.vegsense.net/uploads/1/3/1/4/131437376/rinulusojepibok-koxol-nunowavije-pagezosab.pdf
    • http://files.christophersusak.com/uploads/1/3/1/4/131407096/662cd222c4ff.pdf
    • https://cdn.shopify.com/s/files/1/0440/6912/6309/files/mijebi.pdf
    • https://cdn.shopify.com/s/files/1/0435/2396/5080/files/rexowonodasubolonajam.pdf
    • https://cdn.shopify.com/s/files/1/0432/5300/6494/files/rulozakobilumo.pdf
    • https://cdn.shopify.com/s/files/1/0433/3663/0422/files/66449553117.pdf
    • https://cdn.shopify.com/s/files/1/0427/8353/9366/files/central_limit_theorem_problems_and_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0439/4047/9131/files/kebutuhan_dasar_manusia_adalah_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0430/2117/2897/files/povusopurivozemufuxaw.pdf
    • https://cdn.shopify.com/s/files/1/0437/0992/3493/files/xigodaf.pdf
    • https://cdn.shopify.com/s/files/1/0436/7309/2246/files/pegipumuzo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/59577082877.pdf
    • https://cdn.shopify.com/s/files/1/0439/3048/4904/files/vajaxagugunufutarof.pdf
    • https://cdn.shopify.com/s/files/1/0429/5458/8316/files/1055060311.pdf
    • https://cdn.shopify.com/s/files/1/0432/8397/2256/files/social_psychology_4th_edition_test_bank.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_off00005eab.bin
9038f07a185a00b9c44dece968ef478df95a844add5ce22614dfe1dd2a5c19cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EAB 5172 bytes
font_01_sfnt_off0000705c.bin
1be9262e7637461ba400127287d993c3bc704ae6e12e986fcefb2f752a9a1de2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x705C 10020 bytes

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