Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2f2217a332dba9d…

MALICIOUS

PDF

44.9 KB Created: 2020-09-05 02:53:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c9360cbb6ce18faadebb7c9fbbb0cc06 SHA-1: 4e76ea979bedffef8e98a9f0b5ea10498f826c3b SHA-256: e2f2217a332dba9dbf5ba83beb87149c2a33cc9ae5a33fad097945d5cf3d5245
152 Risk Score

Malware Insights

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

This PDF document was flagged by a machine learning classifier as malicious. It contains a large number of embedded links, with at least one pointing to a known malicious redirector. The document body is heavily obfuscated, but the presence of the URL 'https://ttraff.club/wix?keyword=foam+mattresses+consumer+reports' suggests a lure related to consumer reports or product reviews, likely to redirect users to a malicious site or phishing page.

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.club/wix?keyword=foam+mattresses+consumer+reports
    • https://static.usrfiles.com/ugd/77d535_dd63a027606c4085a395d2ad19ec9f35.pdf
    • https://static.usrfiles.com/ugd/b8c837_c5c1c7f912464944b0ff6b432dc6a691.pdf
    • https://static.usrfiles.com/ugd/b65acf_473660e451a547cfa9e6e658abcb9bfd.pdf
    • https://static.usrfiles.com/ugd/32acb1_42b21634473c4fa29cc4416a255947dd.pdf
    • https://static.usrfiles.com/ugd/77eba6_a94c0922ddc9426a8172271eed37ba1e.pdf
    • https://static.usrfiles.com/ugd/bf0735_8113947c37164cbaba12369491ceeab1.pdf
    • https://static.usrfiles.com/ugd/b8c837_47248dd6f0a14672b265e6081293c3cb.pdf
    • https://static.usrfiles.com/ugd/b8c837_d5015d7093324947bdb15965c442a8df.pdf
    • https://static.usrfiles.com/ugd/097bd5_f54259a67cd24a39b738e790f82f1edc.pdf
    • https://static.usrfiles.com/ugd/1e533a_9aae11f5c110459591040b8d76cf1347.pdf
    • https://cdn.shopify.com/s/files/1/0434/7750/0057/files/labifuru.pdf
    • https://cdn.shopify.com/s/files/1/0434/9919/2472/files/trumpet_keys_notes.pdf
    • https://cdn.shopify.com/s/files/1/0438/1478/1085/files/canciones_infantiles_para_piano.pdf
    • https://cdn.shopify.com/s/files/1/0432/8305/4757/files/nirowikiwunexadovegaful.pdf
    • https://cdn.shopify.com/s/files/1/0430/5246/6325/files/income_tax_rate_in_pakistan_2020_17.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_off0000746c.bin
a0bbe224babffdd21cc1b26126cfef2e3c7109167b63138666e0569eab1615a2
pdf-font-stream PDF embedded font (sfnt) at offset 0x746C 5004 bytes
font_01_sfnt_off00008558.bin
1e18adc957f817aff935d98c3c3ef87b5977cf56317780271ac544e2da05b5bd
pdf-font-stream PDF embedded font (sfnt) at offset 0x8558 9736 bytes