Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed4ee328b7412466…

MALICIOUS

PDF

43.8 KB Created: 2020-08-19 07:53:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bee95c592e9d05670c65d1a77e688ecd SHA-1: 61734685a1928068a9f60fb693451cd17b1954c7 SHA-256: ed4ee328b74124669c2fbd41d36d2ae2f4482012b16af2feb00c871cab5df227
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as an online form for 'Uptet 2019'. The link, https://ttraff.cc/pify?keyword=uptet+2019+online+form+last+date, points to known malicious infrastructure. Additionally, the PDF exhibits characteristics of a link farm, embedding numerous external links, many of which point to Shopify-hosted PDFs, suggesting an attempt to manipulate search engine results or distribute further malicious content. No scripts were extracted, but the PDF structure and embedded links strongly indicate a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=uptet+2019+online+form+last+date
    • http://files.prosewizard.com/uploads/1/3/0/7/130775221/dukivasibadupepowaz.pdf
    • http://files.bbf-cafe.store/uploads/1/3/1/3/131398573/a537f7e.pdf
    • http://xokawegod.pacific-solutions.com/uploads/1/3/0/7/130775666/1873303.pdf
    • https://cdn.shopify.com/s/files/1/0430/6308/3170/files/94374940374.pdf
    • https://cdn.shopify.com/s/files/1/0433/1126/7990/files/dijagozasuz.pdf
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/pifixafamu.pdf
    • https://cdn.shopify.com/s/files/1/0437/9059/8305/files/81786090217.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8758/files/51747372253.pdf
    • https://cdn.shopify.com/s/files/1/0435/5594/6655/files/57691233731.pdf
    • https://cdn.shopify.com/s/files/1/0431/4903/3627/files/pusafagemusakarerixazeto.pdf
    • https://cdn.shopify.com/s/files/1/0431/6430/3522/files/87755553478.pdf
    • https://cdn.shopify.com/s/files/1/0440/9065/4885/files/apocrypha_bible_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/7407/6315/files/navy_advancement_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/4081/5774/files/56515826429.pdf
    • https://cdn.shopify.com/s/files/1/0432/3459/0878/files/estimation_of_working_capital_requirement.pdf
    • https://cdn.shopify.com/s/files/1/0433/5039/2984/files/broods_heartlines_acoustic.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_off000069b3.bin
6afda94221c468664e93ca45122f7857f5d32ff025a351138383899cebd4437d
pdf-font-stream PDF embedded font (sfnt) at offset 0x69B3 5660 bytes
font_01_sfnt_off00007cdd.bin
7e7e3e41c1593faea75e70f01d4d7c4c58d0fdce7a3fe2bce9b1c787a0894485
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CDD 11212 bytes