Malicious PDF — malware analysis report

Static analysis result for SHA-256 22eaf49114397592…

MALICIOUS

PDF

49.7 KB Created: 2020-09-02 03:45:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 30bdbadc161985449d60cd7ecc656aea SHA-1: e2bde780d84c64d1c0d2eeed145cdb1f7244319f SHA-256: 22eaf491143975926087d99312212344a42036fd4c4a996951a4467840d08d5b
152 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, a significant portion of which point to a link farm hosted on cdn.shopify.com. One of the primary URLs, https://ttraff.com/wix?keyword=arithmetic+sequence+puzzle+worksheet, is flagged as a malicious redirector. This suggests the document's purpose is to lure users through SEO-optimized links to potentially malicious or phishing content.

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.com/wix?keyword=arithmetic+sequence+puzzle+worksheet
    • https://cdn.shopify.com/s/files/1/0430/3201/9097/files/rutemazorefulozeregebas.pdf
    • https://cdn.shopify.com/s/files/1/0436/9724/2280/files/80482588787.pdf
    • https://cdn.shopify.com/s/files/1/0434/3057/6285/files/68014277428.pdf
    • https://static.usrfiles.com/ugd/ad2ade_c9084d12fda34f238631e9f0959a762d.pdf
    • https://static.usrfiles.com/ugd/a6e5e9_a0ed6fd5d06e477b85ffef170cc72067.pdf
    • https://static.usrfiles.com/ugd/57c819_acda3ba854634839bfeb6c0cd98c9048.pdf
    • https://cdn.shopify.com/s/files/1/0435/3464/7445/files/psicologia_aplicada_a_administrao_de_empresas.pdf
    • https://cdn.shopify.com/s/files/1/0434/3840/7845/files/equidad_de_genero_en_el_ambito_laboral_en_mexico.pdf
    • https://cdn.shopify.com/s/files/1/0428/1863/3894/files/80928850015.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/cambridge_fce_sample_exam_use_of_english.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31906594002.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060e0.bin
4cb0f4ad9d41040ed54b2ede030e75ce14a9c8567963a8788a1f258e36d7041b
pdf-font-stream PDF embedded font (sfnt) at offset 0x60E0 5168 bytes
font_01_sfnt_off00007265.bin
9dcc26a62f36e0f5eaeb49a339c670223fa0c6355d251ba9dcdef1c4e6db8ce4
pdf-font-stream PDF embedded font (sfnt) at offset 0x7265 10716 bytes
font_02_sfnt_off00009669.bin
e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6
pdf-font-stream PDF embedded font (sfnt) at offset 0x9669 16164 bytes
font_03_sfnt_off0000ab80.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xAB80 4324 bytes