Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c2c7de726e0176d…

MALICIOUS

PDF

45.0 KB Created: 2020-08-17 14:52:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65b0690b5ead56b83d6f99e49f617c53 SHA-1: b33ce022e3679d6b63ebf7266f3a9ecaadad91f7 SHA-256: 8c2c7de726e0176df60ad0e4e4fbad0c1e1b34ff16288ded5d4a7fb80ff1ad98
120 Risk Score

Malware Insights

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

The PDF file contains a lure related to a game, 'game broken age android', and embeds multiple links. One of these links, 'https://ttraff.com/pify?keyword=game+broken+age+android', is identified as a malicious redirector. The PDF also contains a large number of external links, many hosted on cdn.shopify.com, suggesting a link farm or SEO poisoning tactic. No scripts were extracted, but the presence of a malicious redirector indicates an attempt to lead the user to a malicious site.

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=game+broken+age+android
    • http://files.antennabooks.com/uploads/1/3/0/7/130776828/pinopiviputurubegi.pdf
    • http://files.preacherrhetorica.com/uploads/1/3/1/3/131398036/7840310.pdf
    • https://cdn.shopify.com/s/files/1/0434/6085/3912/files/72851144301.pdf
    • https://cdn.shopify.com/s/files/1/0432/1135/8372/files/nobodyknows_hero_s_come_back.pdf
    • https://cdn.shopify.com/s/files/1/0432/8164/5736/files/dumodo.pdf
    • https://cdn.shopify.com/s/files/1/0428/8164/6758/files/40080377150.pdf
    • https://cdn.shopify.com/s/files/1/0436/7345/2697/files/gdiplus_dll_missing.pdf
    • https://cdn.shopify.com/s/files/1/0428/7637/1110/files/kuxepedex.pdf
    • https://cdn.shopify.com/s/files/1/0431/5657/0266/files/73034069075.pdf
    • https://cdn.shopify.com/s/files/1/0433/4125/0714/files/answer_key_group_4_2020.pdf
    • https://cdn.shopify.com/s/files/1/0434/5603/7016/files/jufif.pdf
    • https://cdn.shopify.com/s/files/1/0435/3599/0936/files/valoxofetivatof.pdf
    • https://cdn.shopify.com/s/files/1/0433/9128/7452/files/dukibarikowupufurumavezoj.pdf
    • https://cdn.shopify.com/s/files/1/0435/9290/8962/files/budaya_jawa_barat.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006620.bin
0aee2df264d5fc91c2484d25300d87451b268c166ba08584752d0d41716b1837		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6620 4880 bytes
font_01_sfnt_off0000769b.bin
f8b85bbe5fe89bd5c47e04f7f1c7a2782776f14e682134f3a957b1f6c054b8ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x769B 10104 bytes
font_02_sfnt_off0000993f.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x993F 4324 bytes

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