Malicious PDF — malware analysis report

Static analysis result for SHA-256 a70e21401f779777…

MALICIOUS

PDF

44.4 KB Created: 2020-09-12 18:18:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f70865765408e34c257d76bf09a97a7 SHA-1: ac7824847790c4bf8f0b82cae5b5cf2268cf552c SHA-256: a70e21401f77977715d1f0bf065639b6e29ad446f7c67014edc18d85db237440
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. The document also exhibits a link farm heuristic, with numerous embedded links pointing to shopify.com, though these appear benign. The presence of a malicious redirector suggests the document is designed to lead the user to a malicious site, likely for phishing or malware delivery.

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.
  • 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
  • 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.me/wix?keyword=postpaid+connection+cancellation+letter+format+vodafone
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78539107281.pdf
    • https://cdn.shopify.com/s/files/1/0469/0123/1776/files/divuzoxeludatu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3939/9842/files/21346902704.pdf
    • https://cdn.shopify.com/s/files/1/0428/2492/5347/files/ontario_immunization_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0436/6876/6873/files/63129600515.pdf
    • https://cdn.shopify.com/s/files/1/0430/1560/2339/files/dajupidapiwefip.pdf
    • https://cdn.shopify.com/s/files/1/0430/0197/0837/files/77811068115.pdf
    • https://cdn.shopify.com/s/files/1/0431/3622/1341/files/55517899773.pdf
    • https://cdn.shopify.com/s/files/1/0434/3057/6278/files/calculus_ab_practice_test.pdf
    • https://cdn.shopify.com/s/files/1/0435/8828/8675/files/fibonemigipuru.pdf
    • https://cdn.shopify.com/s/files/1/0435/1400/3610/files/toludosujirefepafavof.pdf
    • https://cdn.shopify.com/s/files/1/0435/4742/6975/files/telomanum.pdf
    • https://cdn.shopify.com/s/files/1/0428/5503/9135/files/biwufalilofilerepabukovir.pdf
    • https://cdn.shopify.com/s/files/1/0438/5672/4128/files/vefidemoxupukegajulen.pdf
    • https://static.usrfiles.com/ugd/d9e9a0_7042057278e4442cb56f069c5d419df4.pdf
    • https://static.usrfiles.com/ugd/b8c837_b9dd6113809a4788a1558277233cf625.pdf
    • https://static.usrfiles.com/ugd/7d21c0_b3c044974aad4d47b4f4ecfe96111232.pdf
    • https://static.usrfiles.com/ugd/d90490_423a2ea935434379b4d39e3895a143cb.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_off00006db8.bin
c010976231c3b28ad4295757c27321ccf599c4d379963dbd0a7f0029cf65d119
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB8 5364 bytes
font_01_sfnt_off00007fe7.bin
0e771f5481e2a3bd3137327e56076bbd7dc978fb76a059c8cd7e7dcb0c6c7875
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE7 10616 bytes