Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ad252c215fd5ac3…

MALICIOUS

PDF

92.8 KB Created: 2020-07-28 20:10:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: bc3de63a0c7554ecfd591da02ef75cdd SHA-1: 7f8607011929115da1eb93e0be083c1a54362970 SHA-256: 3ad252c215fd5ac33c049aaffc0e18909b74e08a395d0545b398403bbab9edf7
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying it as a redirector link to a malicious domain. Another heuristic flags it as a link farm, indicating a large number of outbound links. While no scripts were extracted, the presence of many links and the ML classifier's high confidence suggest a malicious intent to redirect users to harmful content, 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.com/pify?keyword=barfi+bollywood+full+movie+free In PDF document text
    • http://files.ewiechart.com/uploads/1/3/2/3/132302913/gomokiwu-dapewijutufose-jofumuvusu.pdfIn PDF document text
    • http://files.langlade16620montboyer.com/uploads/1/3/1/3/131398093/4454217.pdfIn PDF document text
    • http://files.lathemsmill.org/uploads/1/3/0/7/130740138/funemenexadi.pdfIn PDF document text
    • http://files.learnabilitycb.com/uploads/1/3/0/8/130873996/demeroxozijuwu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5725/8395/files/masalanizotupubebum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61047377128.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1030/8765/files/59281449687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1230/9671/files/55129076643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/2619780318.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/62189304596.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8208/7576/files/kivelanosotajebi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9454/0452/files/wimurel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xanixiki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9606/3652/files/pomitevinep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1867/3566/files/56679744193.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7035/6632/files/tewuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15796621189.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008e64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E64 39864 bytes
SHA-256: 143061b5b054c3f6e4d6ad7e761208a80aa8e8f33c29279020c08c85baf95b12
font_01_sfnt_off0001085a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1085A 5012 bytes
SHA-256: ce7b8024f98e878ea08d8f86cf022d12b4a8ad6081f957d180e8a59e4a343e31
font_02_sfnt_off0001197d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1197D 17944 bytes
SHA-256: fe65b18cf1cb8200892e25b47353e62809292575cb02a0efd90907bb53fa0805
font_03_sfnt_off00014ffb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14FFB 16164 bytes
SHA-256: fb475d32ff0b3d9409d8ba80403eb139e35584ddfea263ba57b6747b106d6ed4

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