Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f60bc1dd0f74b6f…

MALICIOUS

PDF

49.9 KB Created: 2020-08-05 15:06:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ffb6f83932c3eef6b358d3e01623cb5a SHA-1: 77d8d030ba2ba063b598347a1fc117874f867b4d SHA-256: 8f60bc1dd0f74b6fae651984317d62425dd444e827e2ac1739f594158880376d
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources hosted on platforms like Shopify and other domains. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=calibration+curve+of+paracetamol+pdf'. This suggests the document's primary purpose is to redirect users to malicious sites, likely for phishing or malware distribution. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine the exact lure beyond the presence of numerous links.

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=calibration+curve+of+paracetamol+pdf
    • http://files.globalimagephotography.net/uploads/1/3/1/4/131453214/eeaf8a929b6b.pdf
    • http://files.futfemuniversal.com/uploads/1/3/1/4/131407918/9497262ca02ac2.pdf
    • http://files.pampervanbeauty.com/uploads/1/3/1/6/131637109/wirinazozimemepep.pdf
    • http://files.thameswardcommunityassociation.com/uploads/1/3/1/8/131871864/vadowipijojez.pdf
    • https://cdn.shopify.com/s/files/1/0438/8516/6760/files/tijaxelumup.pdf
    • https://cdn.shopify.com/s/files/1/0432/9429/4171/files/95380095469.pdf
    • https://cdn.shopify.com/s/files/1/0437/8470/0055/files/14615678507.pdf
    • https://cdn.shopify.com/s/files/1/0429/0835/2679/files/fefajexepoxovixereloxewik.pdf
    • https://cdn.shopify.com/s/files/1/0433/9580/9431/files/drawer_track_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/13534048661.pdf
    • https://cdn.shopify.com/s/files/1/0427/4877/2508/files/vazosejojupoxebirex.pdf
    • https://cdn.shopify.com/s/files/1/0433/3918/6344/files/99_topics_for_ccfp.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wadilizesiwegokadokepub.pdf
    • https://cdn.shopify.com/s/files/1/0432/4042/3592/files/binary_to_gray_code_conversion_truth_table.pdf
    • https://cdn.shopify.com/s/files/1/0430/8749/5322/files/41261584753.pdf
    • https://cdn.shopify.com/s/files/1/0429/7333/1609/files/93235493027.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31688109027.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76957488457.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_off00007570.bin
7e94d22ad31141755abf08700167d14a5a57079e8442dad747784481929885dc
pdf-font-stream PDF embedded font (sfnt) at offset 0x7570 5228 bytes
font_01_sfnt_off00008722.bin
6a25d8158f44d13a42f2e429f9f75373d251ba8c87bf132901d2afa02329b99f
pdf-font-stream PDF embedded font (sfnt) at offset 0x8722 11000 bytes
font_02_sfnt_off0000ac59.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0xAC59 4324 bytes