Malicious PDF — malware analysis report

Static analysis result for SHA-256 50026c46786e1336…

MALICIOUS

PDF

45.6 KB Created: 2020-08-10 05:01:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82e0be90466f80c4ed9e9b912359d060 SHA-1: 49a7ae2332bbd2d2244979111f92b1ff6c35cba3 SHA-256: 50026c46786e13366204e458dd7443275aa27723b2ebc68ca35b43a65ed58ed3
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at `https://ttraff.ru/pify?keyword=altium+designer+viewer+pdf`. This suggests the document's primary purpose is to redirect users to malicious infrastructure. The document body, though heavily obfuscated, contains references to 'Altium designer viewer pdf', indicating a lure to disguise the malicious intent. No scripts were extracted, and the PDF structure itself is the primary vector for the attack.

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.ru/pify?keyword=altium+designer+viewer+pdf
    • http://telefa.avensys.co.kr/uploads/1/3/1/8/131856917/nowegirukamux-logesezavug-rinutodu-rapiza.pdf
    • http://files.flamintips.com/uploads/1/3/1/3/131380213/lurarozesabos-danisebikivefe-xopexogabimazos-zufasatesizibe.pdf
    • http://files.riverqueengreens.com/uploads/1/3/1/8/131872298/1d09824fc.pdf
    • https://cdn.shopify.com/s/files/1/0438/9833/9496/files/antigone_paul_roche.pdf
    • https://cdn.shopify.com/s/files/1/0436/9983/0952/files/the_cartoon_introduction_to_statistics.pdf
    • https://cdn.shopify.com/s/files/1/0428/6690/1148/files/624351082.pdf
    • https://cdn.shopify.com/s/files/1/0435/6050/1407/files/alternative_therapies_in_health_and_medicine.pdf
    • https://cdn.shopify.com/s/files/1/0431/6302/5559/files/barricades_mystrieuses.pdf
    • https://cdn.shopify.com/s/files/1/0432/5307/2022/files/jirijerukanaxo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/26034853504.pdf
    • https://cdn.shopify.com/s/files/1/0433/6356/5718/files/gipisotodivefo.pdf
    • https://cdn.shopify.com/s/files/1/0437/7539/3944/files/never_gonna_stop_singing_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0437/7178/9469/files/institutional_ownership_capital_structure_and_firm_performance.pdf
    • https://cdn.shopify.com/s/files/1/0431/9579/3568/files/20758364377.pdf
    • https://cdn.shopify.com/s/files/1/0431/7131/5876/files/zinc_plating_process_flow.pdf
    • https://cdn.shopify.com/s/files/1/0429/1097/4108/files/26365701308.pdf
    • https://cdn.shopify.com/s/files/1/0428/2603/9463/files/72248573108.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_off00006979.bin
bd251c4fe7b76216701b1c126905525d5d70db27517b00abe654639eebc9e123
pdf-font-stream PDF embedded font (sfnt) at offset 0x6979 3308 bytes
font_01_sfnt_off00007544.bin
4342f70652438098ca896bee83e769a8ea70b327f29e3a0e6da5c5d0bd1d116a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7544 5292 bytes
font_02_sfnt_off00008749.bin
1714ef203c9fb891ad21422f6e625c927ed66c43274614c520aeaa7afa5d272a
pdf-font-stream PDF embedded font (sfnt) at offset 0x8749 9968 bytes