Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cfa9378bb4e905f…

MALICIOUS

PDF

35.7 KB Created: 2020-08-19 04:30:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 56fae3f24e517811eb90b478afd90632 SHA-1: 526570b9e5a2fb63d9474f5be8d878bbeb9f0fbe SHA-256: 4cfa9378bb4e905fbf93ada123756fd9987934f6d5857ab67069833676b65263
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links, disguised as a search result, redirects to a malicious domain (ttraff.com). This suggests a social engineering attack aimed at redirecting users to malicious content. No scripts were extracted, and the document body is heavily obfuscated, making it difficult to determine the exact payload.

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=pak+army+song+video++mp4
    • http://files.breathlifeministries.com/uploads/1/3/0/7/130775916/tafirofowuwesigeker.pdf
    • http://pegafikud.bayareadragonswrestlingcenter.org/uploads/1/3/0/8/130874189/949efb9af58ca9.pdf
    • http://dujonu.islshenzhen.com/uploads/1/3/1/6/131606201/mafez.pdf
    • http://dunilop.theroanokerestaurant.com/uploads/1/3/1/4/131437254/wimokitaj.pdf
    • http://files.nightsongpettingzoo.com/uploads/1/3/1/6/131606121/zegodikaxa.pdf
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/how_to_check_spam_on_gmail.pdf
    • https://cdn.shopify.com/s/files/1/0447/9189/0071/files/35595170628.pdf
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/tugagaroranugewarunapiso.pdf
    • https://cdn.shopify.com/s/files/1/0432/4206/1986/files/gabolotuvuzuvu.pdf
    • https://cdn.shopify.com/s/files/1/0438/2133/4690/files/lawigagovuzama.pdf
    • https://cdn.shopify.com/s/files/1/0432/3167/4535/files/59280366761.pdf
    • https://cdn.shopify.com/s/files/1/0432/1624/0807/files/list_of_valid_email_addresses.pdf
    • https://cdn.shopify.com/s/files/1/0430/5072/9634/files/widujunudemavopupan.pdf
    • https://cdn.shopify.com/s/files/1/0437/5832/1821/files/53713243206.pdf
    • https://cdn.shopify.com/s/files/1/0432/7777/9100/files/dr_sunday_adelaja_books.pdf
    • https://cdn.shopify.com/s/files/1/0435/5896/1320/files/guided_reading_level_for_8th_grade.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuwuvedalolavotidexetugom.pdf
    • https://cdn.shopify.com/s/files/1/0430/7435/5351/files/kovosugorobixi.pdf
    • https://cdn.shopify.com/s/files/1/0429/5891/3689/files/ketijefebab.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_off00004dd9.bin
017b7ce6f7c40ad794fc84f17e670e7a3957c7f8c02069608098424f254abeb7
pdf-font-stream PDF embedded font (sfnt) at offset 0x4DD9 5560 bytes
font_01_sfnt_off000060c9.bin
bf443efdcf1b9c0775726a8ecadf28458d0bcd197fdafed2ca4fdab4705c9c55
pdf-font-stream PDF embedded font (sfnt) at offset 0x60C9 9672 bytes