Malicious PDF — malware analysis report

Static analysis result for SHA-256 14023a78ca90f699…

MALICIOUS

PDF

43.5 KB Created: 2020-09-03 04:48:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1647666093a764aeb370364328d9b04b SHA-1: 4f701903bec1ad3bf2ebb7dc16ca979c0b3d6701 SHA-256: 14023a78ca90f69991f7e4259a85d8e4b8ae017c64191e54e1b23813670db3f1
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, with one prominent link directing to a known malicious redirector. This suggests an attempt to lead the user to a malicious site, likely for phishing or malware distribution. The document body, though partially corrupted, contains keywords related to the linked URL, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/wix?keyword=aluminium+composite+panel+sheet+sizes
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/1103/7589/files/71479253727.pdf
    • https://cdn.shopify.com/s/files/1/0432/9799/6955/files/accompany_noun_form.pdf
    • https://cdn.shopify.com/s/files/1/0435/1967/2472/files/9003282451.pdf
    • https://static.usrfiles.com/ugd/6cf0f5_d31261699d004e74a6721d5b72227628.pdf
    • https://static.usrfiles.com/ugd/4d6844_502b4106943a48618aa1e7e6594f7131.pdf
    • https://static.usrfiles.com/ugd/d3758e_30e94b325e294821bb5762c149cdf821.pdf
    • https://cdn.shopify.com/s/files/1/0427/9504/0924/files/aerodynamics_of_wind_turbines_hansen.pdf
    • https://cdn.shopify.com/s/files/1/0434/3041/2450/files/cisco_ccna_certification_guide.pdf
    • https://cdn.shopify.com/s/files/1/0437/7303/4657/files/zanimopakoxuwedu.pdf
    • https://cdn.shopify.com/s/files/1/0429/1470/9663/files/gumezaxabijefusikub.pdf
    • https://cdn.shopify.com/s/files/1/0427/4978/8327/files/94809266104.pdf
    • https://cdn.shopify.com/s/files/1/0437/4796/7130/files/rukmini_babu_baruah_new_song.pdf
    • https://cdn.shopify.com/s/files/1/0437/7509/9041/files/78887692235.pdf
    • https://cdn.shopify.com/s/files/1/0435/7079/0558/files/rugofototadekodeni.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c3e.bin
51b6a4919beda642bdbd0bc79ae816a03d8ebd14eb195b3e942882d292cb8330
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C3E 5116 bytes
font_01_sfnt_off00007d89.bin
45cf25d3992375aeebb46a7344e759736b2601f03ef451effea7db69570e2f1e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D89 10440 bytes