Malicious PDF — malware analysis report

Static analysis result for SHA-256 02fe1d601d8e0819…

MALICIOUS

PDF

48.7 KB Created: 2020-09-18 10:22:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 888671efc8628370ba7fb0365ad40e15 SHA-1: 18dc7f7ffbb50992ecbcacb118d16f56e44d7bfd SHA-256: 02fe1d601d8e08190c4ad77ef385f2360e28de72e70daff7946654f389a961bd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links, one of which points to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be the same as the malicious redirector. This suggests the PDF is designed to trick users into visiting a malicious site, likely for phishing or malware distribution.

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.link/wix?keyword=skyrim+siege+on+the+dragon+cult+spear+gate
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0434/1792/7837/files/buxixofakowedobozuso.pdf
    • https://cdn.shopify.com/s/files/1/0431/7039/8362/files/ashrae_1997_hvac_fundamentals_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0481/4277/8519/files/foziwomufekow.pdf
    • https://cdn.shopify.com/s/files/1/0430/5420/3031/files/salugip.pdf
    • https://cdn.shopify.com/s/files/1/0440/5726/4280/files/dadeladomilufolubagewetev.pdf
    • https://cdn.shopify.com/s/files/1/0430/0016/8597/files/xutulagar.pdf
    • https://de4e94bb-42e1-4284-9b78-934f09eb004d.filesusr.com/ugd/76156b_50ff0e0f09b740b4b84ecd9754734062.pdf?index=true
    • https://f4633fd9-2d7c-4f09-9da0-edc13c9505d4.filesusr.com/ugd/bb05c1_9771639580ba4854aaa8bba55536449b.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0463/2946/2945/files/the_illusion_of_life.pdf
    • https://cdn.shopify.com/s/files/1/0437/9626/7168/files/31526648725.pdf
    • https://cdn.shopify.com/s/files/1/0434/6842/3334/files/kegikobofewipu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8120/3861/files/sentence_combining_worksheet_answers.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072a7.bin
7ed560fe6fb57b16d14d35b7a601e5ea6826ef3ac2140ce8e2c0200a0f59af31
pdf-font-stream PDF embedded font (sfnt) at offset 0x72A7 5636 bytes
font_01_sfnt_off000085a2.bin
542f06b2f4c377661ae142f351535deb53137780ce4d80e6355d111ea49bc6a3
pdf-font-stream PDF embedded font (sfnt) at offset 0x85A2 9980 bytes
font_02_sfnt_off0000a7c6.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xA7C6 4324 bytes