Malicious PDF — malware analysis report

Static analysis result for SHA-256 db5557cb0b42a73c…

MALICIOUS

PDF

40.5 KB Created: 2020-08-10 03:54:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a339955afdde0969411b8ff93ab6041 SHA-1: 6909065a35e5a71c18a374a669b0e364844689c1 SHA-256: db5557cb0b42a73c54e2a2e5943e12068bb6d05ec38f12694baa4b9164bbcde1
128 Risk Score

Malware Insights

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

The PDF contains a link that redirects to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body also contains numerous links to external PDFs, suggesting a link farm for SEO poisoning or traffic redirection. The presence of a 'Download' call-to-action further supports a malicious intent to lure users into clicking the deceptive link.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=annexure+a+self+declaration+for+labour+licence+maharashtra+pdf
    • http://folijes.hanoisweethome.com/uploads/1/3/0/7/130775403/1719096.pdf
    • http://xorel.thepinayexplorer.com/uploads/1/3/2/7/132740930/7864071.pdf
    • http://mekibu.superiorclinics.com/uploads/1/3/1/4/131437919/gifolet.pdf
    • http://files.asmonzaracing.com/uploads/1/3/1/4/131408103/bba4ecd839e7c4.pdf
    • http://files.corneliahoogland.com/uploads/1/3/2/7/132740264/9741885.pdf
    • https://cdn.shopify.com/s/files/1/0437/6608/7838/files/48059267867.pdf
    • https://cdn.shopify.com/s/files/1/0430/3601/6802/files/29369326769.pdf
    • https://cdn.shopify.com/s/files/1/0428/5209/0022/files/50455296366.pdf
    • https://cdn.shopify.com/s/files/1/0428/1014/6983/files/pixuwuze.pdf
    • https://cdn.shopify.com/s/files/1/0430/1648/7065/files/bihar_si_previous_year_question_paper_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0430/8910/0957/files/4505050197.pdf
    • https://cdn.shopify.com/s/files/1/0438/4410/8445/files/causatives_get_have_and_make_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0433/9243/4326/files/hindu_panchang_calendar_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/6550/5952/files/75849150096.pdf
    • https://cdn.shopify.com/s/files/1/0433/4488/7963/files/22125436990.pdf
    • https://cdn.shopify.com/s/files/1/0434/7209/3336/files/19323487076.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_off0000603d.bin
6483c467d370d8fd168bde65ecf1b739d63327515026e1141d37c5d0c87e911e
pdf-font-stream PDF embedded font (sfnt) at offset 0x603D 5592 bytes
font_01_sfnt_off00007319.bin
9162e8809ebe1014512cc3ab34493a73746bdc0e9f65ae8d63306be1d5f52b11
pdf-font-stream PDF embedded font (sfnt) at offset 0x7319 9820 bytes