Malicious PDF — malware analysis report

Static analysis result for SHA-256 618d6ed6d00d858c…

MALICIOUS

PDF

45.4 KB Created: 2020-08-16 19:45:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f7a487988da4e94135e72f7f75ab85e2 SHA-1: 7c537842d5110072eaf4b95c5141a5ed4a38f763 SHA-256: 618d6ed6d00d858c90f99acce1b3d70cc7b1ab070b3f19440193344fc2b53edb
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, includes the URL 'https://ttraff.com/pify?keyword=get+your+guide+amsterdam+red+light+district', suggesting a lure to a malicious site. The presence of a large number of external PDF links further indicates a link farm or redirection strategy. No scripts were extracted, but the PDF structure and embedded links point towards a phishing or malicious redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=get+your+guide+amsterdam+red+light+district
    • http://files.lisabishoptutoring.com/uploads/1/3/1/8/131858592/riluduxosuj-turatomukanabo-vamejilinikuno.pdf
    • http://files.terriermath.com/uploads/1/3/0/8/130813821/ferotumufagu.pdf
    • http://files.shcscience.com/uploads/1/3/1/0/131070911/venetosisabarul.pdf
    • http://files.alekstinapoodles.com/uploads/1/3/0/7/130776519/4314976.pdf
    • http://files.faithbykristywhite.com/uploads/1/3/0/7/130739152/40e3ed.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.opentle.org
    • https://cdn.shopify.com/s/files/1/0440/5516/7126/files/64754536537.pdf
    • https://cdn.shopify.com/s/files/1/0432/2312/2084/files/5113687722.pdf
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/ff6_walkthrough.pdf
    • https://cdn.shopify.com/s/files/1/0433/4606/7621/files/33458061410.pdf
    • https://cdn.shopify.com/s/files/1/0433/7346/1669/files/kajebasijofizofofosinuj.pdf
    • https://cdn.shopify.com/s/files/1/0427/9864/5404/files/80109586179.pdf
    • https://cdn.shopify.com/s/files/1/0434/0065/9100/files/template_powerpoint_2016_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/1869/0458/files/advantages_of_a_questionnaire.pdf
    • https://cdn.shopify.com/s/files/1/0428/9832/5663/files/wewijawozo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6776/8981/files/pixelmon_great_ball.pdf
    • https://cdn.shopify.com/s/files/1/0434/8998/4674/files/35690786909.pdf
    • https://cdn.shopify.com/s/files/1/0435/2484/9815/files/jisorodazilevefovemagifi.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/
    • http://scripts.sil.org/OFL
    • http://www.gnu.org/licenses/gpl.html

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000615c.bin
cd0bada93957454a5437b78b5553fa7ec028bb397453b8e864024707d6e362ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x615C 5488 bytes
font_01_sfnt_off000073df.bin
5be44346d319058aa3967323051b213c4701682e04df3f919255302848ddcc2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73DF 6324 bytes
font_02_sfnt_off00008473.bin
18fa44c0d6034aa6e771a8a341665a51a2c83f3e55eaa858ceacabb6528fbfe0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8473 10516 bytes

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